7th Grade Reg Sem 2 Review Part 2

Find the area of the shaded region in terms of pi (𝜋).

Tyrone is making a scale drawing of his room. The scale is 2 cm = 4 ft. If this scale drawing measures 6 cm x 4 1/2 cm. What are the measurements in feet of his actual room?

• 10 ft x 8 ft

• 12 ft x 9 ft

• 15 ft x 9 ft

• 12 ft x 12 ft

The base of a Triangle A is 12 inches, and its corresponding height is 10 inches. Triangle B has a base of 36 inches and has a corresponding height of 30 inches. What is the scale factor of the dilation from Triangle A to Triangle B?

• 2

• 3

• 4

• 5

If a 16-inch pizza is cut into 8 slices and Ria eats 3 pieces, how many square inches of pizza did she eat? Use 3.14 for 𝜋. Round answer to the nearest hundredths, if necessary.

• 52.4

• 75.36

• 104.8

• 150.72

Andrew wants to enlarge his picture from the Bucs stadium for his bedroom wall. The original picture is 4 inches by 6 inches. The scale factor is 1:5. What is the area of the new picture?

• 400 in

• 500 in

• 600 in

• 700 in

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• 3 ft

• 4 ft

• 5 ft

• 6 ft

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Caden is painting a giant circular basketball on his wall. He needs to find the area of this circle to buy enough paint for it. The circle’s diameter is 6 feet. What is approximately the area of the circular basketball? Use 3.14 for 𝜋. Round answer to the nearest tenths, if necessary.

• 28.3 ft

• 32.4 ft

• 15.7 ft

• 29.7 ft

The circumference of the pitcher’s mound is 18𝜋 ft. What is the area of the mound in terms of pi (𝜋)?

Find the area of a circle with a diameter of 3cm. Use 3.14 for 𝜋. Round to the nearest thousandths, if necessary.

• 7.065 cm

• 7.650 cm

• 12.453 cm

• 9.872 cm