The volume of a hemispherical bowl is 71823....
The volume of a hemispherical bowl is 71823. Find its radius .
4.0 cm
5.6 cm
7.0 cm
3.8 cm
Correct answer is C
Volume of bowl \frac{2}{3}\pi r^2\\ 718\frac{2}{3}=\frac{2}{3}\pi r^2\\ \frac{2156}{3}=\frac{2}{3} \times \frac{22}{7} \times r^3 ∴r^3 = \frac{2156 \times 3 \times 7}{3 \times 2 \times 22}\\ r^3 = 343\\ r = \sqrt[3]{343}\\ r= 7.0cm
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