Question

From a cylindrical wooden block, a hemispherical portion is carved out at each end if it. If the length of the cylinder is 20cm and the diameter of its base is 10.5cm, find the total surface area of the remaining block.

Answer 1

Answer:2046Cmsquare

Step-by-step explanation:

Tsa=csa of cylinder + 2*csa of hemisphere =2πrh + 4πr square =(2*22/7*10.5/2*20) + (4*22/7*10.5*10.5) after calculations ,the csa of xarved cylinder is found.i.e, 2046 cm square