Chat with our AI personalities
The radius is 1/2 the diameter. In other words, just divide the diameter by 2.
Area = pi*(diameter/2)2 = pi*252 = 1963.50 mm2
Internal diameter.
D = 50mm = 5cm Volume of sphere = Pi/6 x D3 = Pi/6 x 125 = 65.45 cubic centimetres (rounded).
Area = pi*252 = 1963.495 square mm to 3 decimal places