Question

Please explain ty :)

Answer 1

Answer: V≈18887 cm³.

Explanation:

The circumference L is 126 cm.

Hence, L=2πr.

126=2πr

2*63=2*πr

Divide the equation by 2π:

`\displaystyle\\(126)/(2\pi ) =r\\\\(63)/(\pi ) =r\\\\20,05\ cm \approx r\\\\V=\pi r^2h\\r\approx 20,05\ cm\ \ \ \ height\ h=15\ cm.\\Hence,\ \\V=\pi *(20,05)^2*15\\V=\pi *20,05*20,05*15\\V=\pi *6012\\V\approx18887\ cm^3.`