Question

Find the height of a cylinder whose radius is 14cm and the total S. A. is 1936 cm²​

Answer 1

☆Answer

• Let the height of cylinder be h.
• Radius = r = 14cm
• Total surface area = 2πr (h+r)

$\color{red}{ 1936 = 2× \frac{22}{7} ×14 (h+14)} \\ \color{orange}1936 = 88 (h+14) \\ \color{gold}22 = (h+14) \\ \color{lime}H = 22-14 = 8cm$

$\sf \color{cyan}Hence \: the \: height \: of \: the \\ \sf \color{cyan}cylinder \: is = 8cm$