Question

find the area of the circle with (1)radius = 35 cm (2)diameter = 2.8 M

Answer 1

area of circle =2πr= 2×22/7×35
=44×5
220

Answer 2

area of circle = πr2
when r=35
22/7×35
=22×5
=110cm2
diameter=2.8
to convert into radius= 2.8/2
=1.4
when r=1.4
=22/7×1.4
=22×0.7
=15.4cm2