Atrapezoid an area of 7.2 square miles. one base is 1.2 miles and the other is 2.4 miles long. what

Atrapezoid an area of 7.2 square miles. one base is 1.2 miles and the other is 2.4 miles long. what is the height

9. Find the area of a circle having a circumference of 382. Round to the nearest tenth. Use 3.14 for 1. a. 1133.5 units b. 1078.6

1. brutalgitaffe says:

Formula for a trapezoid is:

A = ((a + b) / 2) h

A is area, a and b are the base sizes, h is height.

Plug n' chug:

7.2 = ((1.2 + 2.4) / 2) h

Simplify:

7.2 = 1.8h

Divide both sides by 1.8 to get h alone

4 = h

2. miguearrobita says:

Area = 7.2 square miles

Base = 1.2

Second base = 2.4

Area of Trapezium = (1/2)*(Sum of Bases)*height

7.2 =  (1/2)*(2.4 + 1.2)*h

7.2 = (1/2)*3.6*h

7.2 = 1.8h

1.8h = 7.2

h = 7.2/1.8 = 4

Height = 4 miles.