11-0 Area of 2D Shapes

find the area of the circle below.

• 100 cm

• 225 cm

• 9 cm

• 28.26 cm

Answer explanation

The correct answer is 28.26 cm because the formula for the area of a circle is A = πr^2, and with a radius of 3 cm, the area is 3.14 * 3^2 = 28.26 cm.

Tags

CCSS.7.G.B.4

Find the area of the circle

• 56.52

• 254.34

• 1017.36

• 113.04

Answer explanation

To find the area of a circle, use the formula A = πr^2. Given the radius, calculate A = π(9^2) = 254.34. Therefore, the correct answer is 254.34.

Tags

CCSS.7.G.B.4

The radius is....

• a line that crosses through the center and touches each edge 

• the center point of a circle 

• a line from the center point to the edge of the circle

• an element in science

Answer explanation

The radius is a line from the center point to the edge of the circle, which is the correct choice among the options provided.

A line that goes from one end of the circle to the other and crosses the center point.  

• center

• diameter

• dime eater

• radius

Answer explanation

A diameter is a line that goes from one end of the circle to the other and crosses the center point, making it the correct choice.

What is the area of this circle?

• 6082.12

• 1520.53

• 1893.14

• 1292.92

Answer explanation

The correct answer is 1520.53 because the area of a circle is calculated using the formula A = πr^2, where r is the radius provided in the question.

Tags

CCSS.7.G.B.4

If the diameter of a circle is 50 yards, the radius is _____

• 100 yards

• 25 yards

• 150 yards

• 15 yards

Answer explanation

To find the radius, divide the diameter by 2. Therefore, the radius is 50 yards / 2 = 25 yards. Hence, the correct answer is 25 yards.

Tags

CCSS.7.G.B.4

• 36 sq. cm

• 6 cm

• 24 sq. cm

• 12 sq. cm

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Determine the area of the shaded region. Make sure you add sq.ft. to your answer.

(a)  

Determine the area of the shaded region.

(a)  

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Which figure has the greatest area?

• A

• B

• C

Answer explanation

Figure A has the greatest area as it appears to have the largest size among the given figures.

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3