Question

can you solve this ques.

Answer 1

r2= 15400 cm2

22/7 * r2 = 15400

r2= 15400 * 7/22

r2= 4900

r= root of 4900

r= 70

r2h = 92400 cm3

22/7 x 70 x70 x h = 92400 cm3

= h = 92400 x 7/ 22 x 70 x70

h=6 cm

CSA = 2 x x r x h

= 2 x 22/7 x 70 x 6

= 2640 cm2

Answer 2

Here is your answer......
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Area of the base of cylinder=15,400cm²
                                 ∴15,400=πr²
                                    15,400=22/7 × r²
                                       r²=(15400×7)/22
                                       r²=4900
                                        r=√4900
                                        ∴The radius is 70cm
Volume of a cylinder=πr²h
∴92,400cm²=πr²h
92,400=22/7×(70)²×h
92400=22/7×4900×h
∴h=(92400×7)/22×4900×2
h=6cm
∴The height of the cylinder is 6cm
Curved surface area of cylinder=2πrh
                                                 =2×22/7×70×6
                                                 =2640cm²
So,Height of the cylinder=6cm and its curverd surface area=2640cm²
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DONE!
Hope it helps!