Problema Solution
A leather coin purse has the shape of a triangle. Two sides are equal in length and the third side is 3 centimeters shorter than one and one-half times the length of the equal sides. The perimeter is 28.5 centimeters. Find the lengths of the sides.
Answer provided by our tutors
First start by stating the known.
Two of the sides are equal in length and the third side is 3 centimeters shorter than 1/2 the length of the equal sides. In addition, the perimeter is 28.5 cm. The sides can be found using the following equation:
2x+(1/2x) -3=28.5
5/2x-3=28.5
5/2x=31.5
x=12.6cm (this is the length of the equal sides)
The 3rd side will be 6.3-3, which equals 3.3cm (3rd side length)
Hope this helps :D