Question

the total surface ar of cone of radius r/2and slant height 2his
​

Answer 1

T.S.A of cone= πr(r+s)

Here r stands for radius and s stands for slant height

So,T.S.A = π×r×1/2(r×1/2+2h)

=22/7×r/2(r/2+2h)

= 11r/7(r/2+2h)

= 11r²/14+22rh/7

= 11r²+44rh/14 or r(11r+44h)/14

This was your answer

Hope it helps.....

Please mark it as brainliest