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zloy xaker [14]
3 years ago
8

PLEASE HELP

Mathematics
2 answers:
s344n2d4d5 [400]3 years ago
7 0
Let the length of the diameter be d and radius be r, thus to solve for d we proceed as follows:
r²+31²=(r+15)²
solving for d we solve for r
r²+961=r²+30r+225
putting like terms together we obtain:
r²-r²+961-225=30r
736=30r
solving for r
r=24.53
thus
d=24.5333×2
d=49.067~49.1
Answer is D. 49.1

Anvisha [2.4K]3 years ago
5 0

Answer:

r=49.1

Step-by-step explanation:

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