Question

a solid consists of a hemisphere and a cylinder which share a common base the cylinder has a base radius of 7cm and a height of 10cm.Find the total surface area,of the solid​

Answer 1

Answer:

902 cm³

Step-by-step explanation:

Now,

r = 7cm (of both hemisphere and cylinder)

h = 10 cm

TSA of solid = CSA of Hemisphere + CSA of cylinder + area of base  (ONE SIDE OF THE BASE IS NOT COVERED WITH THE HEMISPHERE)

TSA of solid = 2πr² + 2πrh + πr²

TSA = πr(2r + 2h + r)

TSA = $\frac{22}{7} * 7 * ((2* 7 ) + (2 * 10) + 7)$

TSA = 22 x (14 + 20 + 7)

TSA = 22 x 41 = 902 cm³