Question

area of shaded portion
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Answer 1

Answer:

area of the rectangle =28cm×21cm=588 sq cm

diameter of the circle=√(28^2+21^2) cm

=√(784+441) cm

=√1225 cm

=√35×35cm

=35 cm

so radius =35/2 cm

area of the circle =22/7×(35/2)^2 sq cm

=22×1225/7×4 sq cm

=11×175/2 sq cm

=1925/2 sq cm

=962.5 sq cm

area of the shaded portion

(962.5-588)sq cm

=374.5 sq cm