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Tema [17]
2 years ago
15

What is the area of the following trapezoid in square feet?

Mathematics
2 answers:
77julia77 [94]2 years ago
7 0

Answer:

135 ft^2 (first answer choice)

Step-by-step explanation:

Convert the length of the 7 yd base to feet:  21 ft.

Then the average length of the trapezoid is (15 ft + 21 ft)/2 = 36/2 ft = 18 ft.

The area of the trapezoid is then (average length)(height), or

A = (18 ft)(7.5 ft) = 135 ft^2 (first answer choice)

tangare [24]2 years ago
4 0

Answer:

82.5 ft²

Step-by-step explanation:

The area (A) of a trapezoid is calculated as

A = \frac{1}{2} h (b₁ + b₂)

where h is the perpendicular height and b₁, b₂ the parallel bases

Here h = 7.5, b₁ = 7 and b₂ = 15 , then

A = \frac{1}{2} × 7.5 × (7 + 15) = 0.5 × 7.5 × 22 = 82.5 ft²

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