Question

& Find the Curved surface area of and the total surface of
a cone whose height is 28 cm and diameter is 42cm​

Answer 1

Answer:

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 × 21 × 35

= 2310 cm square

TSA = πr(l+r)

= 22/7 × 21 ( 35 + 21)

= 22/7 × 21 × 56

= 3696 cm square

Step-by-step explanation:

Answer 2

Answer:

here is your answer.

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