7.G.A.1 Review

By what factor is Triangle 1 reduced to form Triangle 2?

• 0.25

• 0.5

• 1.25

• 2.5

The scale drawing of a mural at Westside Middle School is shown. A scale factor of 1.5 inches = 1 yard was used to create the drawing. How many square yards of paint will be necessary to complete the mural?

• 10 square yards

• 15 square yards

• 22.5 square yards

• 33.75 square yards

Use the information to answer the question. A plant manager makes a scale drawing of the company's plant headquarters using a scale of 1 cm = 12 m. What is the area of the production floor in square meters?

• 144 m²

• 288 m²

• 2520 m²

• 1152 m²

△EFG is dilated to create △E'F'G'. If EF = 4 and E'F' = 8, which statement is true?

• If FG = 3, then F'G' = 7.

• If FG = 3, then F'G' = 6.

• If GE = 2, then G'E' = 1.

• If GE = 2, then G'E' = 6.

A rectangle is given. If the rectangle is enlarged by a scale factor of 2.5, what will be the area of the enlarged rectangle?

• 250 inches²

• 100 inches²

• 65 inches²

• 40 inches²

The dining room table in Josh’s house measures 90.3 cm by 75.8 cm. In order to be able to fit all of his relatives, he has to add leaves to extend the table. Each leaf is 30.1 cm by 75.8 cm. If Josh adds three leaves to the table, what effect will the extensions have on the area of the table?

• The area will stay the same.

• The area will double.

• The area will triple.

• The area will quadruple.

Michelle's dad decides to put fencing around the backyard. He creates a scale drawing where every 3 inches represents 13 feet. How much fencing does Michelle's dad need to buy to build the fence?

• A) 19 feet

• B) 57 feet

• C) 247 feet

• D) 251 feet

A rectangular piece of land will be divided diagonally into 2 congruent triangular sections. One section is being paved for parking. The blueprint measurements for the piece of land are 4 inches wide and 16 inches long. The blueprint scale is 1/4 inch = 10 yards. How much area will be paved?

• 102,400 yd²

• 51,200 yd²

• 640 yd²

• 40 yd²

If the lengths of all 4 sides of the rectangle are doubled, then the area will...

• double

• triple

• quadruple

• increase by 3