Q 1: Area of a semicircle: pi*r^{1} 1/2*(pi*r^{2}) 2*pi*r

Q 2: Diamater of a circle: 2(l+b) 2*pi*r 2r

Q 3: Area of a circle: pi*r pi*r^{2} 2*pi*r^{2}

Q 4: Circumference of a semicircle: pi*r^{2} pi*r + 2*r pi*r

Q 5: Area of a rectangle: a^{2} 4a lb

Q 6: Area of triangle: lb 4a 1/2 bh

Q 7: Area of square: 2(l+b) 4a a^{2}

Q 8: Perimeter of a square: 4a a^{2} lb

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!

