Question

Answer this question properly full described​

Answer 1

Step-by-step explanation:

curved curved surface area of cylinder =2πrh

area of base of cylinder=πr2h

whole surface area of the cylinder=πr(r+h)

(1) radius 7 centimetres, height 12 CM

CSA=2πrh=2×22/7×7×12=528cm2

area=πr2=22/7×7×7=154cm2

surface area=πr2(r+h)=836cm2

(2) radius 2.8 metres, height 5 metres

CSA=2πrh=2×22/7×2.8×5=88m2

area=πr2=22/7×2.8×2.8=7.84m2

surface area=πr(r+h)=22/7×2.8(2.8+5)=137.28m2

(3) radius 35 millimetre, height 50 millimetre

CSA=2πrh=2×22/7×35×50=11000mm2

area=πr2=22/7×35×35=3850mm2

surface area=πr(r+h)=22/7×35(35+50)=9350mm2

hope it will help you thanks