Question

Find the total surface area of cone whose radius is r/2 and slant height is 2

Answer 1

r = r/2

l = 2

total surface area = πrl + π r²

= 2πr ( l+r)

= 44/7*r/2(2 + r/2)

= 22r/7(4+r/2)

= 88r + 22 r/14

= 110r/14 = 55r/7

Answer 2

$xy2 {a}^{2}hfxr2$