SBA Review: 2D GEOMETRY

Open Ended

What is the area of the trapezoid below?

Fill in the Blanks

What is the area of the shared region?

Multiple Choice

Which of the following best describes the difference between the area and circumference of a circle?

• Area is the space inside the circle, while circumference is the distance around the circle.

• Area is the distance around the circle, while circumference is the space inside the circle.

• Area and circumference are both the same measurement for a circle.

• Area is only used for squares, while circumference is only used for circles.

Multiple Select

Which formulas would you use to find the area of a rectangle, parallelogram, and trapezoid? Select all that apply.

• A = b × h

• A = πr²

• A = 1/2(b₁ + b₂)h

• A = 2πr

Fill in the Blanks

The area of a triangle is calculated as

× base × height.

Multiple Choice

In PE, a parachute is laid out on the gym floor. The parachute has a radius of 16 feet. Which measurement is closest to the circumference of the parachute in feet?

• 100.48 ft

• 198.4 ft

• 49.6 ft

• 803.84 ft²

Multiple Choice

A coffee shop sign is in the shape of a circle. The sign measures 18 inches across in diameter. Which measurement is closest to the area of the sign in square inches?

• 56.52 in²

• 101.36 in²

• 188.78 in²

• 254.34 in²

Multiple Choice

A spool with 18 feet of ribbon will be cut into 8-inch segments. How many 8-inch segments can be cut from the spool of ribbon?

• 10

• 27

• 2.25

• 14.8

Multiple Choice

Using various magnetic tiles, Marco forms the figure below. What is the area of the figure?

• 432 in²

• 34 in²

• 60 in²

• 48 in²

Multiple Choice

A puzzle is shown below. Which of the following is the closest to the area of the shaded portions of the puzzle?

• 18 cm²

• 72 cm²

• 24 cm²

• 60 cm²

Multiple Choice

The picture below will be enlarged by a scale factor of 2.5. What will be the area of the enlarged picture?

• 50 in²

• 45 in²

• 125 in²

• 250 in²

Multiple Choice

A triangle is inscribed in a rectangle, as shown below. What is the area of the shaded region?

• 40 cm²

• 47.5 cm²

• 62.5 cm²

• 22.75 cm²

Multiple Choice

Edgar pays $67.86 for 7.8 pounds of fertilizer. What is the price per pound of fertilizer?

• $6.98

• $5.65

• $8.70

• $10.26

Multiple Choice

A circular rug has a radius of 4 feet. Which of the following is closest to the number of square feet the rug covers?

• 55.26 ft²

• 50.24 ft²

• 29.7 ft²

• 33.6 ft²

Open Ended

What is the area of the figure below in square centimeters?

Multiple Choice

Which of the following best describes your understanding of finding the area of 2D shapes after today's lesson?

• I feel confident and can solve problems on my own.

• I understand the basics but need more practice.

• I am still confused and need more help.

• I did not learn anything new.

Open Ended

What is one thing you learned about 2D geometry today that you found interesting or surprising?