Hat is the surface area of a cylinder that has a volume if 785.4in3 and a radius of 5 in?
2 answers:
Answer:
Step-by-step explanation:
<u>Cylinder volume:</u>
<u>Cylinder surface area:</u>
<u>Find h from the first equation:</u>
- h = V/(πr²) = 785.4/(3.14*5²) = 10 in
<u>Find surface area:</u>
- A = 2π(5)(5 + 10) = 471.23 in²
Correct choice is A
Answer:
volume of cylinder=πr²h
785.4=22/7×5²×h
h=785.4×7/(22×25)=9.99=10in
Step-by-step explanation:
surface area of cylinder =2πr(r+h)=2π×5(5+10)=
471.238898038in²
A 471.2in2 is your answer.
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