2 years ago

Please help, it would mean the world

Mathematics

1 answer:

natita [175]2 years ago

5 0

1. 12x+ 21
2.88x-33
3.-15x+(-10)

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Step-by-step explanation:

Hello.

to find the volume of a sphere we must know its radius,

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$A=4\pi r^{2} \\ \\isolating\ r\\\\A=4\pi r^{2}\\r=\sqrt{\frac{A}{4\pi } } \\r=\sqrt{\frac{100\ ft^{2} }{4\pi}} \\\\ r= \sqrt{25\ ft^{2} }\\ r=5\ ft\\$

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