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kristinaholahan
06.04.2020 •
Mathematics
Find the surface area of a cone whose base is a circle with a 5 cm radius and whose altitude is 10 cm.
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Ответ:
l² = h² + r²
l² = 10² + 5²
l² = 125
l = 5√5
Surface area = πr(r + l)
Area = 22/7 × 5 (5 + 5√5)
Area = 550/7 × (1 + √5)
Ответ:
76 yard is the answer.
Step-by-step explanation:
C=2πr
239.64/3.14=2r
76=2r
and 2r=d