Question

find the area of acircle of radiud (1) 7.7cm (2)7cm

Answer 1

Area of circle = pie r sq

1)7.7 cm
= pie (7.7)sq

= 22/7×7.7×7.7

=22× 1.1× 7.7

=186.34 cm sq Ans

2)7cm
=22/7×7×7
=22×7
= 154 cm sq Ans

Answer 2

area = pie r2
=3,14 *7.7*7.7 cm
=186.17cm sq ans
area= pie r2 cm
= 22/7 * 7*7 cm
=22*7
=154 cm sq ans

Is this right?