Find the areas of the curved surface and the total surface of a cylinder closed at both ends with base 8.4 cm in radius and height 15cm (use pie 22/7)
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2
Answer:
Radius of cylinder (r)=7cm
Height of cylinder (h)=15cm
Curved Surface Area =2πrh
=2×(22/7)×7×15
=660cm
2
Total Surface Area =2πr(h+r)
=2×(22/7)×7(15+7)
=2×22×22
=968cm
2
Answered by
2
Answer:
Csa of cylinder :2πrh= 2×3.14×8.4×15 =633cm square
TSA of cylinder = Csa of cylinder + πr×r= 633+3.14×8.4×8.4
=633-221.5 =411.5cm square
hope it helps :))
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