What is the answer, please help

asked Jul 26, 2023 233k views

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3 votes

Answer:
$768\pi=1024\pi-16\pi r^2, r=4$

Explanation:

We are given that
$V=768\pi$ , so
$768\pi=1024\pi-16\pi r^2$ .

$768\pi=1024\pi-16\pi r^2\\\\768=1024-16r^2\\\\-256=-16r^2\\\\16=r^2\\\\r=4 \text{ } (r > 0)$

Sharel answered Aug 2, 2023

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