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3. The rectangle and the trapezoid have the same area. What is the length of the rectangle? 21 ft. 5 ft. 5 ft. e 9 ft.

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The formula for determining the area of a trapezoid is expressed as

Area = 1/2(a + b)h

where

a and b are the length of the opposite sides of the trapezium

h is the height

From the information given,

a = 21

b = 9

h = 5

Area = 1/2(21 + 9)5 = 1/2(30)5

Area = 75 square feet

The area of a rectangle is expressed as

Area = length x width

Given that the rectangle and the trapezoid has the same area, it means that

75 = 5 x l

l = 75/5

l = 15

Thus, length of the rectangle is 15 ft

User Gallaxhar
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