SOLUTION: 1. The height of a triangle is 4 feet less than the base. The area of the triangle is 16 square feet. Find the length of the base and height of the triangle. 2. The perime

Algebra ->  Triangles -> SOLUTION: 1. The height of a triangle is 4 feet less than the base. The area of the triangle is 16 square feet. Find the length of the base and height of the triangle. 2. The perime      Log On


   

Question 140879:
1. The height of a triangle is 4 feet less than the base. The area of the triangle is 16 square feet. Find the length of the base and height of the triangle.
2. The perimeter of a rectangle is 32 inches. The area of the rectangle is 48 square inches. Find the dimensions of the rectangle.
3. Find the radius of a cylinder whose volume is 2512 cubic centimeters and whose height is 8 centimeters.




Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
the formula is bh/2=area
b*(b-4)/2=16
(b^2-4b)/2=16
b^2-4b=32
b^2-4b-32=0
(b-8)(b+4)=0
b-8=0
b=8 feet for the base.
h=8-4=4 for the height.
proof
8*4/2=16
32/2=16
16=16