If slant height of the cone is 21cm and diameter of base is 24 cm. The total surface area of cone is: ???
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Answer:
Given, l = 21 cm
d = 24 cm
r = 24/2 = 12 cm
TSA of cone = πr( l + r )
= 22/7×12 ( 21 + 12 )
= 264/7 ( 33 )
= 8712 / 7
= 1244.57 cm ^2
Step-by-step explanation:
Answer is 1244.57 cm ^2 .
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