20 ft.
r= 20/2
8(1.5)
4(2)
8(1.5)+4(2)= 20
21st Step: Radius(r)= 14/2=7
2nd Step: Area(a)= 3.14(7)^2
What is 153.86 sq. cm?
Find the area of a composite figure with the measurements of:
Right Triangle (x2): 6 x 8
Rectangle #1: 4 x 7
Rectangle #2: 19 x 8
What is 132 sq. cm?
a= 6(8)(2)/2 + 4(7) + 19(8)
7 cm
7(2)
7 cm.
d= 7(2)
12(1.5)
12(1.5)= 18
A= 3.14(.25)^2
Find the area of a rectangle with the measurements of:
Rectangle: 7cm x 5cm
What is 35 sq. cm?
a= 7(5)
9cm
a= 3.14(9)^2
C= 2(3.14)5
7(2) | 5(3) | 11 | 16
7(2)+5(3)+11+16= 56
r= 2.25/2 = 1.125
a= 3.14(1.125)^2/2 = 1.987(03125) appx.
Find the area of a triangle with measurements of:
Triangle: 7cm x 5cm
What is 17.5 sq. cm?
a= 7(5)/2
9cm
9/2= 4.5
C= 3.14(6)/2
9.42+6= 15.42
4(3) | 3 | 5
4(3)+3+5= 20
r= 12/2
a= 3.14(6)^2 = 113.04
What is the area of a square with measurements of:
Square: 22cm x 22cm
What is 484 sq. cm?
a= 22(22)
4cm
r= 4/2=2
a=3.14(2)^2= 25.12
C= 2(3.14)7/2
21.98+7(2)= 35.98
6 | 9.5 | 4 | 5 | 6.5
6+9.5+4+5+6.5= 31
The radius of the circle is .8125 in.
What is the area of a composite figure with measurements of:
Square: 2cm x 4cm
Triangle: 9cm x 10cm
What is 53 sq. cm?
a= 2(4) + 9(10)/2
.75 cm
3.14(.75)^2