Question

Find the height of a solid cylinder of radius 1cm and total surface area 28cm2

Answer 1

3.017 is the height of the solid cylinder

Answer 2

Here is your answer


Radius = 1 cm
Total Surface Area = 28 sq cm

As we know the formula
Total Surface Area of Cylinder= 2πr(r+h)
$28 = 2 \times \frac{22}{7} \times 1(1 + h) \\ \frac{28 \times 7}{2 \times 22} = 1 + h \\ 4.45 = 1 + h \\ h = 4.45 - 1 \\ h = 3.45$
So Height of Cylinder is 3.45 cm

Hope it helps you