Question

A semi-circle sits on top of a rectangle to form the figure below. Find its area and perimeter. Use 3.14 for ππ .. 4 in L, Base 6in

Answer 1

Check the picture below.

Answer 2

Perimiter=disatnce around

perimiter=4+6+4+1/2circumfernce

c=pi times diameter
the diameter is 6in
so c=6pi
1/2 of that is 3pi

so the perimiter=4+6+4+6pi or 10+4+6(3.14) or 14+18.84=32.84in

the area=4 times 6+1/2 times area of circle
area of circle=pir^2
r=radius=1/2 diameter
diameter=6
6/2=3=radius
area circle=pi3^2 or 9pi or 9(3.14)=28.26
we need half of that so 28.26/2=14.13
area=4 times 6+14.13=24+14.13=38.13 square inches


perimiter=32.84in
area=38.13 square inches