Question

two equal sideof a triangle are each 4 cm less than three times the third side. Find the sides of the
triangle if its perimeter is 55​

Answer 1

Answer:

1st side=23cm

2nd side=23cm

3rd side=9cm

Step-by-step explanation:

let the third side be x.

then the two equal sides are 3x-4 and 3x-4.

perimeter P=55cm

P=sum of all sides

So, P=(3x-4)+(3x-4)+x=55

=3x-4+3x-4+x=55

=7x-8=55

=7x=55+8

=7x=63

=x=63/7=9

therefore,

1st side= 2nd side = 3 X 9-4=27-4=23cm

3rd side=9cm

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