the hight and radius of the cylinder are 7cm and 3.5cm respectively find ratio of total surface area to the lateral surface area
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Answer:
2πr(r+h)/2πrh
(r+h)/h
(3.5+7)/7
10.5/7
1.5:1
Step-by-step explanation:
Answered by
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Step-by-step explanation:
Total surface area of cylinder=2πrh+2πr^2= 2×22/7×7×35/10+2×22/7×7×7=154+308=462. Lateral area of cylinder=2πrh=2×22/7×7×35/10=154. Ratio of total surface area and lateral surface area=462/154=3
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