Question

find the csa and tsa of a cone whose height is 28cm and the diameter is 42cm​

Answer 1

Answer:

Hence, the height of the cone is 48 cm. Hence, the slant height of the cone is 50 cm. Hence, the curved surface area of the cone is 2200 cm2.

Answer 2

h= 28cm

d= 42cm

So r= 42/2 = 21 cm

Slant height = √h square + r square

= √28 square + 21 square

= √784+ 441

= √1225

= 35

CSA = πrl

= 22/7 x 21 × 35

= 2310 cm square

TSA = πr(l+r)

= 22/7 x 21 (35 +21)

= 22/7 x 21 × 56

= 3696 cm square

Here is ur answer.

Hope it helps u buddy ☺☺