Question

A bookmark is shaped like a rectangle with a semicircle attached at both ends. The rectangle is 11 cm long and 4 cm wide. The diameter of each circle is the width of the rectangle. What is the area of the bookmark? Use 3.14 for π.

Answer 1

Figure=1rectangle+2 semicircles
1semicircle=1/2circle
2 (1/2 circles)=1 circle
figure=1 rectangle+1 circle
area of rectangle=legnth times width
area of circle=pir^2

so the width of the rectangle=diameter of the circle
widht=4

diameter=2r
d/2=r
width=d=4
4/2=r=2

area of circle=3.14 times 2^2
are of circle=3.14 times 4
aera of circle=12.56

area of rectangle=11 times 4
area=44

total=add them up
12.56+44=56.56 cm^2