Question

What is the perimeter of the figure? Use 3.14 for pi

Answer 1

61.68cm

Explanation:

semicircle=12x2x3.14x1/2=37.68

trapezium=10+6+8=24

s+t=61.68cm

Answer 2

42.84 cm

Explanation:

It would be easiest to split this first. To find the circumference of a circle, it is 2πr.

d= 12

r= 6

C= 2π6

C= 12π

Divide by 2 because you are only trying to get the circumference of half the circle.

C= 6π

Now you can add all the other sides to find the total perimeter.

P= 6(3.14) + 10 + 6 + 8

P= 42.84 cm