PART A
Volume = Area of a triangle base x height (..or length)
Volume = 2,400cm^3
Volume = 1/2(16)(h)(20)
2,400cm^3=1/2(16)(h)(20)
2/400cm^3/160 = 160(h)/160
Part A= 15cm^3=height of the box
PART B
Surface Area = 1/2(15*16)(2)+20(17)(2)+16(20)
Surface Area = 240+680+320
Surface Area = 1,240
Part B = You will need approximately 1,240cm of cardboard.
So 5 boys ,5 girls which means 5/10= 0.5
Set up as a proportion
90/6 = 300/x
multiply 90x=6(300)
90x = 1800
divide both sides by 90
x=20
The answer is 13 ft because 39 times 4 is 156 and 156 divided by 13 is 12
