The total surface area of a cylinder is 220 sq. cm with height 6.5 cm. Find its volume
Answer & explanation
Correct answer: option 4
TSA = 2πr(r + h)220 = $2×\frac{22}{7}×r(r+\frac{13}{2})$
$⇒r=-10,\frac{7}{2}$
Since radius cannot be negative
$∴r=\frac{7}{2}$ ∴ πr2h = 250.25 cm3
Hence, volume of the cylinder = 250.25 cm3