Question

find the area of regular pentagon whose each side is 5 cm long and the radius of inscribed circle is 3.5 cm​

Answer 1

Step-by-step explanation:

Divide the pentagon into 5 triangles.

so that you get the base as 5cm

and the radius of the circle becomes the height.

Area of triangle = 1/2 × b × h

=1/2×5×3.5

=8.75 sq . cm

Area of pentagon= 8.75 sq.cm × 5

=43.75 sq.cm

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