Answer:
area of the trapezoid=1/2(7+12)×5
=47.5cm
The length of the square pool is 8. 49cm
<h3>How to determine the area</h3>
Note that the formula for finding the area of a square is given as;
Area = length^2
We have
Area = 72 m²
Substitute into the formula
I^2 = 72
Find the square root of both sides
I= √72
I = 8. 49cm
The length of the square pool given as I is 8. 49cm
Thus, the length of the square pool is 8. 49cm
Learn more about area of a square here:
brainly.com/question/486778
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Kylie's first month collection, a1= $ 145
Second month collection , a2= $145+ 20
Third month collection, a3 = $145 +2*20
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.
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so for n months collection = an-1+20
We get an= 20 + an-1 and a1=145
16 + 36 = 52 so the answer would be A) 4(4 + 9) because that equals 52 as well.
