Question

This isosceles triangle has two sides of equal length, a, that are longer than the length of the base, b. The perimeter of the triangle is 15.7 centimeters. The equation 2a + b = 15.7 can be used to find the side lengths.

If one of the longer sides is 6.3 centimeters, what is the length of the base?

cm

Answer 1

2(6.3) + b = 15.7

12.6 + b = 15.7

b = 3.1

Hope this helps!

Answer 2

The length of the base is 3.1 cm.

What is a Perimeter ?

Perimeter is the distance around the edge of a shape.

Perimeter of a triangle of side a, b and c is given by a + b + c

In isosceles triangle a = c and b is the base  , a and c are longer than b

The longer side given is a or c = 6.3 cm

2 a + b = 15.7

2* 6.3 + b = 15.7

12.6 +b = 15.7

b= 3.1 cm

Therefore the length of the base is 3.1 cm.

To know more about Perimeter

brainly.com/question/6465134

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