Question

. Find the volume of a cylinder whose area of base is 42 sq.cm. and height is 4cm. *​

Answer 1

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GIVEN THAT

• In a cylinder area of base( π r²)= 42 sq. cm

• Height (h) = 4cm

FORMULA

• The volume of cylinder =

$\pi \: {r}^{2} h$

SOLUTION

• The volume of cylinder = 42×4 = 168 cm3

Answer 2

Step-by-step explanation:

base area = πr^2

42=22/7x r^2

42x7/22= r^2

21x7/11. = r^2. (1)

volume of cylinder= πr^2h

= 22/7x 21x7/11x4 (taking value of r^2 from eq.1)

= 11x21x4

= 11x84

= 924 sq.cm