Question

radius of base of a cylinder and it's height are given find the curved surface area and total surface area
radius = 2.5cm and height = 7cm

Answer 1

HEY MATE!

HERE IS YOUR ANSWER

STEP BY STEP EXPLANATION
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Radius=2.5cm
Height=7cm

Curved surface area of cylinder = 2×pie×radius×height
curved surface area of cylinder=2×22/7×2.5×7
curved surface area of cylinder =2×22×2.5
curved surface area of cylinder =110cm^2

total surface area = 2×pie×radius(radius+height)
total surface area =2×22/7×2.5(2.5+7)
=44/7×2.5(9.5)
=44×2.5×9.5/7=149.285cm^2

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HOPE IT HELPED ^_^

Answer 2

Answer:

CSA= 110cm²

TSA= 149.28cm²

Step-by-step explanation:

CSA=2πRH

=2×22÷7×2.5×7

=44×2.5

=110 cm²

TSA=2πR(R+H)

=2×22÷7×2.5(2.5+7)

=(44×23.75)÷7

=149.28 cm²