Problema Solution
an isosceles triangle has two equal sides. the triangle shown here has a perimeter of 72cm. the base is 12cm longer than the two equal sides. find the dimensions of this triangle.
Answer provided by our tutors
Isosceles triangle is a triangle that has two sides of equal length.
Let
x = the length of the each of the equal sides, x>0
x +12 = the length of the base
P = 72 cm the perimeter
The perimeter of the triangle is:
P = 2x + x + 12
P = 3x + 12
We have the following equation:
3x + 12 = 72
........
click here to see the equation solved for x
........
x = 20 cm
x + 12 = 20 + 12 = 32 cm
The dimensions of the triangle are: the base is 32 cm and the other sides are 20 cm each.