The answer as a decimal is -42.6
Answer:
209.23
Step-by-step explanation:
Answer:
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Step-by-step explanation:
O
A=πr²
pool=π(y-4)²=π(y²-8y+16)
total=π(y+4)²=π(y²+8y+16)
walkway=total-pool
walkway=π(y²+8y+16)-π(y²-8y+16)=
π(y²+8y+16-y²+8y-16)=
π(16y)=
16πy
first option is answer
Answer:
y+7-2=21
y+5=21
y+21-5
y=16
Step-by-step explanation:
