What causes an echo? rarefaction reflection refraction
2 answers:
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Answer:
Step-by-step explanation:
we know that
The area of the backyard pool to be resurfaced is equal to the area of the base plus the area of its four lateral sides.
so
where
B is the area of the base
P is the perimeter of the base
H is the depth of the pool
<em>Find the area of the base B</em>
substitute the given values
<em>Find the perimeter of the base P</em>
substitute the given values
we have
<em>Find the area of the backyard pool to be resurfaced</em>
substitute the values