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Sergey Chepurnov · Answer 1 · 2021-10-19T05:17:58+0000

Answer:

176 square yards

Explanation:

The picture of the question in the attached figure N 1

we know that

The area of the walkway around the rectangular pool, is equal to the area of two trapezoids (#1 and #2), plus the area of two smaller rectangles (#3 and #4)

see the attached figure N 2 to better understand the problem

step 1

Find the area of the two trapezoids (#1 and #2)

A=2[(1)/(2)(b_1+b_2)h]

simplify

A=(b_1+b_2)h

we have

$b_1=12\ yd\\b_2=4+12+4=20\ yd\\h=4\ yd$

substitute

$A=(12+20)(4)=128\ yd^2$

step 2

Find the area of the two smaller rectangles (#3 and #4)

A=2[LW]

we have

$L=4\ yd\\W=6\ yd$

substitute

$A=2[(4)(6)]=48\ yd^2$

step 3

Find the area of the walkway around the rectangular pool

$128+48=176\ yd^2$

12 yds How many square yards of cement are needed to create the walkway around the-example-1

12 yds How many square yards of cement are needed to create the walkway around the-example-2

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