Geometry Review SG 2023

A rectangle has an area of 54 square inches. The width of the rectangle is 9 inches. What is the length of the rectangle?

• 6 in.

• 45 in.

• 3 in.

• 12 in.

Answer explanation

The formula for the area of a rectangle is A = l x w, where A is the area, l is the length, and w is the width. We are given that the width is 9 inches and the area is 54 square inches. We can plug these values into the formula and solve for the length using the inverse operation. (division)

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6.8D

The area of a trapezoid is 253 square centimeters. The longer base of the trapezoid is 14 centimeters. The shorter base of the trapezoid is 8 centimeters. What is the height of the trapezoid?​ (a)  

• 23 cm.
• 13 cm.
• 11.5 cm
• 5.75 cm

Answer explanation

Write your formula from the Math Reference chart.

Plug in all the given dimensions.

Solve, using order of operations and inverse operations.

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6.8D

A parallelogram has a base of 18 inches and an area of 405 square inches. What is the height of the parallelogram?

• 45 in.

• 11.25 in.

• 22.5 in.

• Not here

Answer explanation

The formula for the area of a parallelogram is A = bh, where A is the area, b is the base, and h is the height. We are given the base as 18 inches and the area as 405 square inches. We can plug these values into the formula and solve for h using the inverse operation. (division)

Tags

6.8D

A triangle has a height of 34 inches and an area of 408 square inches. What is the base of the triangle?

Mathematical Equivalence

ON

Answer explanation

Use the formula for area of a triangle.

Plug in the given values.

Solve using order of operations and inverse operations.

Tags

6.8D

What is the area of the figure below?

• Not here

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6.8D

What is the volume of the figure below?  

(only enter numeric value)

Mathematical Equivalence

ON

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6.8D

How is 40% expressed as a fraction?

• Not here

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6.4G

Emily used 30 out of 100 stickers. What percent of the stickers were NOT used?

Answer explanation

30 out of 100 stickers were used therefore, 70 out of 100 were NOT used.

Tags

6.4G

How is 2½ expressed as a percent?

Answer explanation

2 1/2 is equivalent to 2.5, multiplied by 100 equals 250%

Tags

6.4G

Which pair of numbers are equivalent?

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6.4G