Question

Find the area of a semicircle if the radius is 6 cm.

(a) 1.35 m

(b) 6.54 m

(c) 18.00 m

(d) 8.05 m

The question was asked in final exam.

I'm obligated to ask this question of Perimeter and Area of a Circle in chapter Area Related to Circles of Mathematics – Class 10

Answer 1

Right option is (b) 6.54 m

The explanation: The area of the semicircle = πr^2/2

= (\(\frac {22}{7}\) × 6^2)/2

= 56.54 m