Wednesday

July 30, 2014

July 30, 2014

Posted by **help me again(last one)** on Thursday, April 26, 2007 at 9:03pm.

Area=1/2 B*H= 1/2 B (2B+4)

solve for B

h = 4 + 2b

b = ?

A = (b*h)/2 = 168

168 = [b(4+2b)]/2

168 = (4b + 2b^2)/2

336 = 4b + 2b^2

2b^2 + 4b - 336 = 0

2(b^2 + 2b - 168) = 0

2(b-12)(b+14) = 0

b=12 and b=-14

Ignore the negative answer, negative distances have no real meaning.

**Related Questions**

GeOmEtRy!!! - a triangle has an area of 35 square inches. The base of the ...

Math - The area A of a triangle is given by the formula A=1/2bh If the base of ...

Math - The area A of a triangle is given by the formula A=1/2bh If the base of ...

geometry - If the height of a triangle is one inch more than twice its base, and...

Algebra II - The height of a right triangle is 7 inches greater than the length ...

Algebra - A triangle has an area of 60 in^2. Its base is 10 inches and its ...

geometry - A triangle's base is 14 inches less than 2 times its height. If h ...

Math - A rectangular solid has a base area of 43.3 sq inches and a height of 50 ...

Math - Aa square and a triangle have equal areas. If a side of the square is 10 ...

geometry - the hight of a triangle is four times the length of the base. find ...