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Answers
Solution is in the above photo.
Answer:
Step-by-step explanation:
(1) curved surface area of a cone = πrl
radius (r) of the base of the cone = (10.5/2)cm=5.25cm
slant height (l) of the cone = 10cm
curved surface area of the cone =πrl
= (22/7 * 5.25 * 10) cm square
= (22/7 * 525/100 * 10) cm square
= (22 * 75/100 * 10) cm square
= 165 cm square
(2) total surface area of the cone = πr(r + l )
radius (r) base of the cone = (24/2)m = 12
slant height (l) of the cone = 21 m
total surface area of the cone = πr(r + l )
= (22/7 * 12 * (12+21)) m square
= (22/7 * 12 * 33) m square
= 1244.57 m square
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