Daily Review MG Day 1

Daily Review MG Day 1

By Deanndra Henson

Practice - Complete Each Question

By Deanndra Henson

Multiple Choice

Which of the following best describes the relationship between the diameter and the radius of a circle?

• The diameter is half the radius.

• The radius is twice the diameter.

• The diameter is twice the radius.

• The radius is equal to the diameter.

Explanation Slide...

The diameter of a circle is defined as twice the length of the radius. Therefore, the correct relationship is that the diameter is twice the radius.

Multiple Choice

If the diameter of a circle is 10 cm, what is the approximate value of the circumference using $$\pi \approx 3.14$$ ?

• 15.7 cm

• 31.4 cm

• 62.8 cm

• 78.5 cm

Explanation Slide...

To find the circumference, use the formula C = πd. With a diameter of 10 cm and π ≈ 3.14, C = 3.14 × 10 = 31.4 cm. Thus, the correct answer is 31.4 cm.

Multiple Choice

Which formula represents the circumference of a circle in terms of its diameter $$d$$ ?

• $$C = \pi \cdot r$$

• $$C = 2\pi \cdot r$$

• $$C = \pi \cdot d$$

• $$C = \frac{\pi}{2} \cdot d$$

Explanation Slide...

The circumference of a circle can be expressed in terms of its diameter using the formula C = πd. This shows that the circumference is directly proportional to the diameter, making the correct choice C = πd.

Multiple Choice

A circle has a radius of 7 cm. What is the area of the circle using $$\pi \approx 3.14$$ ?

• 153.86 cm²

• 154 cm²

• 150 cm²

• 140 cm²

Explanation Slide...

The area of a circle is calculated using the formula A = πr². Substituting r = 7 cm and π ≈ 3.14, we get A = 3.14 × (7)² = 3.14 × 49 = 153.86 cm². Thus, the correct answer is 153.86 cm².

Multiple Choice

If you measure the circumference and diameter of several circles and calculate the ratio $$\frac{C}{d}$$ , what value do you approximate?

• 2

• 3

• 3.14

• 6.28

Explanation Slide...

The ratio C/d represents the mathematical constant pi, which is approximately 3.14. Thus, measuring the circumference and diameter of circles will yield a value close to 3.14.

Multiple Choice

Which formula represents the circumference of a circle in terms of its radius $$r$$ ?

• $$C = \pi \cdot r$$

• $$C = 2\pi \cdot r$$

• $$C = \pi \cdot d$$

• $$C = \frac{\pi}{2} \cdot r$$

Explanation Slide...

The circumference of a circle is calculated using the formula C = 2πr, where r is the radius. This formula accounts for the full distance around the circle, making it the correct choice.

Multiple Choice

Nora is making a circular garden with a diameter of 12 cm. What is the circumference of the garden using $$\pi \approx 3.14$$ ?

• 37.68 cm

• 38 cm

• 36 cm

• 40 cm

Explanation Slide...

To find the circumference, use the formula C = πd. Here, d = 12 cm. Thus, C = 3.14 × 12 = 37.68 cm. Therefore, the correct answer is 37.68 cm.

Multiple Choice

Name the circle part shown

• Diameter

• Radius

• Chord

• Tangent

Explanation Slide...

The radius is the distance from the center of the circle to any point on its circumference. It is half the length of the diameter, making it the correct answer for the circle part shown.

Multiple Choice

Name the circle part shown in red

• Diameter

• Radius

• Sector

• Tangent

Explanation Slide...

The red part shown is the diameter, which is the longest chord of the circle, passing through the center and connecting two points on the circumference. The radius is half the diameter, while a sector is a portion of the circle.

Multiple Choice

What is the area of this circle?

• 82.13

• 78.5

• 314.16

• 170.12

Explanation Slide...

The area of a circle is calculated using the formula A = πr². For a radius of 5, A = π(5)² = 25π, which is approximately 78.5. Thus, the correct answer is 78.5.

Multiple Choice

Find the area of the parallelogram.

• 42

• 21

• 84

• Impossible to determine with the information given.

Multiple Choice

Find the area of the parallelogram.

• 45

• 22.5

• 90

• Impossible to determine with the information given.

Multiple Choice

What is the area of the rectangle?

• 15 square cm
• 15 cm
• 8 square cm
• 16 cm

Multiple Choice

What is the total area of the pink model?

• 3
• 4
• 7
• 12

Multiple Choice

Find the area of the parallelogram.

• 80

• 90

• 720

• 40

Multiple Choice

Ben wanted to make a dog pen with an area of 36 square feet.  What could the dimensions of his dog pen be?

• 3 feet by 6 feet
• 9 feet by 9 feet
• 9 feet by 4 feet
• 5 feet by 6 feet

Multiple Choice

Find the value of h if the area of the parallelogram is 15 m².

• 2

• 4

• 4.8

• 23.25

Multiple Choice

Maura drew a square. Each side measures 6 cm. What is the area of the square?

• 24 sq cm
• 36 sq cm
• 42 sq cm
• 48 sq cm

Multiple Choice

Check out the image of the Triangle . 

The base= b=14in ,height h= 8in. Find the Area of the Triangle using the formula:  $$\frac{1}{2}b\cdot h\ \ or\ \ \frac{b\cdot h}{2}$$  

• A=56 squared inches

• A=112 squared inches

• A= 28 squared inches

• A=  65 squared inches

Multiple Choice

3. A rectangle made using 1 inch tiles is shown. What is the area of the actual rectangle?

• 8 square inches
• 15 square inches
• 25 square inches
• 10 square inches

Multiple Choice

Multiplying by ¹/₂ is the same as _________.

• adding by 2

• multiplying by 2

• dividing by 2

• dividing

Multiple Choice

How do you find the area of a rectangle?

• Length + Length + Length + Length
• Length + Width
• Length x Width
• Width x Width

Multiple Choice

If you diagonally "slice " a rectangle, you will get two triangles.

• TRUE

• FALSE

Multiple Choice

What does "circumference" mean?

• Space a circle takes up
• Distance around a circle
• Line from one side of a circle to another
• Line from center of circle to side

Multiple Choice

Find the area of a triangle with a height of 4 mm and a base of 6 mm?

• 5 mm²

• 6 mm²

• 12 mm²

• 24 mm²

Multiple Choice

Does this picture show the diameter or radius of a circle?

• Diameter
• Radius

Multiple Choice

Find the area of the parallelogram.

• 56cm²

• 28cm²

• 32cm²

• 16cm

Multiple Choice

Does this picture show the diameter or radius of a circle?

• Diameter
• Radius

Multiple Choice

Find the area of the parallelogram.

• 46 in²

• 60 in²

• 56 in²

• 120 in²

Multiple Choice

What is the formula for circumference of a circle given the diameter?

• C = pi x r
• C = pi x 2r
• C = pi x D
• C = pi x 2D

Multiple Choice

What is the formula for circumference of a circle given the radius?

• C = pi x r
• C = pi x 2r
• C = pi x D
• C = pi x 2D

Multiple Choice

What is the diameter?

• 8
• 16
• 10
• 4

Multiple Choice

What is the circumference?

• 48
• 96
• 24
• 18

Multiple Choice

What is the area?

• 5 sq units
• 6 sq units
• 6 units
• none of the above

Multiple Choice

The distance around an object is called the

• area

• perimeter

• volume

• quadrilateral

Multiple Choice

^_perimeter?

• 30 units
• 32 units
• 24 units
• 36 units

Multiple Choice

What is the perimeter?

• 12 cm

• 24 cm

• 35 sq cm

• 75 cm

Multiple Choice

What is the perimeter?
(click to show image)

• 20 metres
• 40 metres
• 60 metres
• 200 metres

Multiple Choice

On which point is the center located?

• A

• B

• C

• D

Multiple Choice

Name two diameters on this circle.

• AB & DE

• AB & EG

• DE & FC

• EG & DE

Multiple Choice

Line CF is called what?

• diameter

• radius

• chord

• arc

Multiple Choice

Find the area of a triangle with a height of 4 mm and a base of 6 mm?

• 5 mm squared
• 6 mm squared
• 12 mm squared
• 24 mm squared

Multiple Choice

• 44.4 mm²
• 5.92 mm²
• 8.88 mm²
• 17.76 mm²