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Answer:
Step-by-step explanation:
d=10.5 cm l=10cm
r = 105/20 =21/4 ,l=10cm
C.S.A of cone = πrl = 22*21*10/7*4 =165 cm²
Answer:
165 cm^2
Step-by-step explanation:
curved surface area of cone= πrl
given, π=22/7. , r=10.5/2. ,l=10
:. => πrl
=>22/7× 10.5/2×10
=>22/7×10.5×5
=>22×1.5×5
=> 165