Question

Find the total surface area of a cone whose
(i) bottom face is a circle with radius 2.25 cm and
(ii) lateral face is a semi-circle with radius 4.5 cm.​

Answer 1

Answer:

CONE

(i) πr ^2 = πx2.25 x 2.25 = 5.0625π

Step-by-step explanation:

ii).πr^2 = πx4.5x4.5=.20.25π

TSA = 5.0625π +20.25π = 25.3125 π

= 79.48cm2