Maths-
General
Easy
Question
The sum of the radius and height of a cylinder is 21 cm and the T.S.A of the cylinder is 660 sq. cm. Find the height and volume of the cylinder ?
Hint:
We take suitable variables for height and radius. Put it in the formula for TSA and find the required parameters.
The correct answer is: The height of the cylinder is 16 cm and the volume is 400π cm3.
Explanations:
Step 1 of 2:
Let the height of the cylinder be h .
Sum of the radius and height is 21 cm, so the radius will be 
cm.
Given, TSA of the cylinder = 660
So, r = 21 – 16= 5 cm
Step 2 of 2:
Volume of the cylinder =
cm3
Final Answer:
The height of the cylinder is 16 cm and the volume is 400
cm3.
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