Question

the csa of the cylinder is 176m2 and it's base area is 38.5 m find the volume?

Answer 1

CSA of cylinder = 176m2

Base area(pir2) =38.5

Base area=pir2

38.5=pir2

38.5=22/7 x r2

38.5x7/22 = r2

269.5/22=r2

2695/220=r2

12.25=r2

r=underoot 12.25

r=3.5m

Now CSA of cylinder=2pirh

176=2x 22/7 x 3.5 x h

176=2 x 22 x 0.5 x 3.5 x h

176=2 x 11 x 3.5 x h

176=22 x 3.5 x h

176=77 x h

h=176/77

h=2.28

Volume of cylinder = 1/3pir2h

= 1/3 x 22/7 x 3.5 x 3.5 x 2.28

=1/3 x 22 x 0.5 x 3.5 x 2.28

= 29.26 m3

Hence volume of cylinder is 29.26 me.

I hope it will help u buddy.

Pls mark it as brainliest ans brother.

Answer 2

Answer:

CSA of the cylinder = 176m²

area of its base = 38.5

Step-by-step explanation:

Area of circle = 38.5

πr²= 385/ 10

22/7 × r²= 385/10

r²= 385 × 7/ 22 × 10

r² = 7 × 7 / 2 × 2

r² = 49/ 4

taking square root on both side , we get

r = 7/ 2

Now , CSA of a cylinder = 176m²

2πrh = 176m²

2 × 22/7 ×7/2 × h = 176m²

With cutting , we get

22 × h= 176m²

h = 176/ 22

h = 8m

Now, the volume of cylinder = πr²h

= 22/7 × 7/2 × 7/2 × 8

= 44 m³