Math
posted by Colin
The area A of a triangle is given by the formula A=1/2bh If the base of the triangle with height 12 inches is doubled, its area will be increased by 48 square inches. Find the base of the orignial triangle.

Reiny
Doubling the base without changing the height would simply double the area.
So the increase is 48 square inches, which means the original triangle is 48 square inches.
48 = (1/2)base(12)
base = 8
Respond to this Question
Similar Questions

Math
The area A of a triangle is given by the formula A=1/2bh If the base of the triangle with height 12 inches is doubled, its area will be increased by 48 square inches. Find the base of the orignial triangle. 
Algebra II
The height of a right triangle is 7 inches greater than the length of its base. If the area of the triangle is 15 square inches, find the base. 
Algebra
A triangle has an area of 60 in^2. Its base is 10 inches and its height is √x inches. What is the value of x? 
college algebra
if the altitude and the base of a triangle are each increased by 4 inches the area of the triangle will be increased by 42 square inches. if the altitude is increased by 3 inches and the base is decreased by 2 inches the area will … 
geometry
The height of a triangle is 25 inches greater than its base. The area of the triangle is 625 square inches. The height of the triangle is inches and the base of the triangle is inches. 
Math
The base of a triangle is three inches more than its height. If each is increased by 3 inches the area of the triangle (1/2 bh) is 14 square inches. Find the original base (𝑏) and the original height (ℎ) in inches. (Lesson … 
Math
The base of a triangle is three inches more than its height. If each is increased by 3 inches the area of the triangle (1/2 bh) is 14 square inches. Find the original base (𝑏) and the original height (ℎ) in inches. (Lesson … 
math
The height of a triangle is 4 inches more than the base. The area of the triangle is 35 square inches. Find the base and height of the triangle. 
algebra
The base of a triangle is 3 inches less than twice its height If the area of the triangle is 126 square inches what equation can be used to find h the height of the triangle in inches 
Algebra  PLEASE HELP!
Can you PLEASE help me with this problem?