Question

calcule o volume de um cone de r=2cm e h=7cm

Answer 1

$x = 1 \div 3 \times \pi(2 {}^{2} ) \times 7 \\ x = 1 \div 3 \times 4\pi \times 7 \\ x = 7 \div 3 \times 4\pi \\ x = 28\pi \div 12$