Question

The perimeter of an isosceles triangle is 43 units. Each equal side is 2 cm more than the unequal side. The three sides are​

Answer 1

Step-by-step explanation:

let x be the length of each equal sides and y be the third side

then,

x=3y

we know that the perimeter of a triangle is the sum of the lengths of the sides, we have

P=x+x+y

but we know also that x=3y

then, we substitute

42=3y+3y+y

42=7y

dividing both sides by 7, we get

y=6

solving for the length of the third side, we get

x=3y

x=3(6)

x=18

Countercheck:

42=18+18+6

42=42