the area of the cylinder?

Question

the internal dimensions of a saucepan shaped like a cylinder are height 20cm and diameter 35cm. Calculate to the nearest whole number,
(i)the area,of the bottom of the saucepan
(ii)the largest volume of liquid,in cm3,which the saucepan can hold.

Answer 1

A = 3.14*17.5^2 = 962 cm^2
V = 962*20 = 19,240 cm^3

Answer 2

For a circle:
A = r^2 * pi and r = 1/2d
d = 35cm so r = 17.5 cm
A = 17.5^2 * pi = 962 cm^2

Volume of a cylinder = A of base * h
V = Ab *h
V = 962cm^2 * 20cm = 19242 cm^3

Hope this helps! :)

Answer 3

Height =20cm
Diameter= 35 cm
Radius= 17.5 cm

Area of cylinde= 2(pie)(r^2) + (2)(pie)(r)(h)

(i)Area of the bottom of the saucepan= (pie)( 17.5^2)
= 962 cm^2

(ii) Volume= (pie)(r^2)(h)
= (pie)(17.5^2)(20)
= 19242 cm^3