Match Area Formulas with Shapes

What is the area of this triangle?
Hint: A = (B x H) / 2

• 10

• 14

• 140

• 70

Find the area of the right trapezoid.

• 24

• 48

• 112

• 99

Answer explanation

You can solve this by breaking it into two shapes (rectangle and a right triangle). If not, use the trapezoid area formula.

Find the base of the triangle.

• about 5

• about 11

• about 15

• About 20

Answer explanation

You solve this problem by remember the area formula. A= (B x H)/2

Careful: two part problem.

First, calculate the area of this rectangle. How many cans of paint do you need if each can of paint covers 10 cm²?

• 7

• 8

• 9

• 10

Answer explanation

You need 9 because there is a remainder, which means you need an additional can of paint or you won't cover it all.

Which equation below would best represent how to find the area of the square below?

• A = 26 X 4

• A = 26 X 26

• A = 26 X 26 X 26 X 26

• A = 26 X 26 X 26 

Two rectangles are shown below. How many more square feet are in rectangle A compared to rectangle B? (a)  

• 2,111 square feet

• 383 square feet

• 24 square feet

• 482 square feet

The side length of a square garden is 5 feet. Julio uses the formula ​​ (a)   to find how big his garden is so he can buy some soil. He finds that his garden covers (b)   .

• a=s x s

• 25 square feet

• a= 4 x s

• p=2(l)+2(w)

• 25 feet

• 15 feet

Solve for the area of the square: side length=6 inches

• 36 square inches

• 24 square inches

• 18 square inches

• 12 square inches

Mrs. Davis wanted to cover the classroom with new carpet. If the length of the classroom was 12 feet and the width was 8 feet. How much carpet would she need to buy?

• 20 feet

• 40 ft

• 96 square feet

• 40 square feet

What is the length of Side A?

• Find the length of side A.

• 40

• 400

• 4,000