Question

The radius and height of a circle are in the radius 7 :2 if the volume of the circle is 8316 centimetre square find the total surface area of the cylinder

Answer 1

Answer:

16632

Step-by-step explanation:

radius = 7:2 = 7/2

volume = 8316

.: volume = πr2×h

.: 8316 = 22/7 × (7/2) 2 ×h

.: 8316 = 22/7 × 49/4 × h

.: 8316 = 22 × 7/4 ×h

.: 8316 = 154/4 × h

.: 8316 × 4/154 = h

.: 33264/154 = h

.: 216 = h

.:h = 216

.: total surface area = 2πr(r+h)

.: = 2 × 22/7 × 7/2 (7/2 + 216)

= 22 (7 × 108)

= 22 ( 756)

= 16632

.: I HOPE IT IS CORRECT ...