Question

PleasE PLEASE PLEASE PLEASE ANSWER FRIENDA URGENT.Each of the two equal sides of an isosceles triangle is thrice times as large as the third side.if the perimeter of the triangle is 28 cm,find each side of the triangle

Answer 1

this is the answer , I think

Answer 2

let the equal sides be x.

and the third side be y.

by the 1st given condition,

x=3y
x-3y=0..................................(1)

by the second given condition

perimeter=28cm
x+x+y=28
2x+y=28................................(2)

multiply equation no.(2) by 3

6x+3y=84.............................(3)

adding equation no. (1) & (3)

(x-3y)+(6x+3y)=0+84

x-3y+6x+3y=84

x+6x=84

7x=84

x=84/7

x=12

substitute x=12 in equation no. (1)

x-3y=0
(12)-3y=0
12-3y=0
12=3y
i.e

3y=12
y=12/3
y=4

so, we get
x=12 &y=4

the equal sides is 12cm
and the third side is 4cm

THEREFORE,
THE SIDES OF GIVEN ISOSCELES TRIANGLE ARE 12cm,12cm&4cm.

hope this helps!!!