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 models this information.

If one of the longer sides is 6.3 centimeters, which equation can be used to find the length of the base?

Answer 1

Answer:

HEY,

15.7-2*6.3=b

15.7-12.6=b

b=3.1 cm

Explanation:

so as we know that perimeter of a triangle=s+s+s

now as we are given the value of a as 2*6.3 cm and also we know that the other side is equal to a. we can put the value of a as 6.3*2. then when we take it on the other side of the equation that is after the equal to sign. we get 3.1 cm. Therefore b=3.1 cm.

equation used here, b=15.7-2a

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