Scale Copy and Area

The area of this rectangle is 90 km². If a scaled copy of this rectangle is made using a scale factor of 5, then what is the area of the copy?

• 210 km²

• 450 km²

• 4500 km²

• 2,250 km²

The area of this rectangle is 90 km². If a scaled copy of this rectangle is made using a scale factor of 3, then what is the area of the copy?

• 270 km²

• 810 km²

• 30 km²

• 156 km²

The area of this rectangle is 90 km². If a scaled copy of this rectangle is made using a scale factor of 1/3, then what is the area of the copy?

• 36 km²

• 20 km²

• 10 km²

• 90 km²

If a scaled copy of this rectangle is made using a scale factor of 10, then what is the area of the copy?

• 36 cm²

• 360 cm²

• 3600 cm²

• 36000 cm²

In the figure above, a dilation from A to A' has occurred. What is the scale factor?

Mathematical Equivalence

ON

The two rectangles are scale drawings. What is the measurement of x?

• 21

• 1.25

• 20

• 4

A scale drawing of Mt. Marcy is 17.8 inches high. Determine the actual height of Mt. Marcy if the scale used for the drawing was 1.5 inches = 450 feet.

• 8,010 feet

• 5,340 feet

• 12,015 feet

Triangle DGF is a scale copy of Triangle EGD. Find the value of x.

• 4.8

• 6.4

• 7.5

• 8

If a scaled copy of this rectangle is made using a scale factor of 1/2, then what is the area of the copy?

• 18 cm²

• 9 cm²

• 4.5 cm²

• 2 cm²

The area of this rectangle is 40 cm². A scaled copy of this rectangle is made using a scale factor of 3, then how many times larger is the area of the copy?

• 3 times larger

• 9 times larger

• 40 times larger

• 360 times larger