Question

if two equal sides of an isosceles triangle are 4x-2cm and 3x+1cm and third side is 2x-1 cm then find its perimeter

Answer 1

Answer:

The answer will be 25 cm.

Step-by-step explanation:

Since it is a isosceles triangle it have two equal sides i.e,

                     4x - 2 and 3x + 1;

Now equate it;

                   ⇒ 4x -2 = 3x + 1;

                   ⇒ 4x - 3x = 1  + 2;

                  ⇒ x = 3;

Here, we got the value of x.

Now, the value of x in all the measures of triangle;

                           ⇒ 4x - 2 = 4(3) - 2 = 12 - 2 = 10;

                           ⇒ 3x + 1 = 3(3) + 1 = 9 + 1 = 10;

                           ⇒ 2x - 1 = 2(3) - 1 = 6 - 1 = 5;

Now, for perimeter we have to add all the sides of the triangle;

So,             Perimeter = (4x - 2) + (3x + 1) + (2x - 1)

                                   = 10 + 10 + 5;

                                   = 25;

That's all

Answer 2

Answer will be 25

Step-by-step explanation:

since, two sides of isosceles triangle are equal

therefore, 4x-2=3x+1

now,

4x-2=3x+1

4x-3x=1+2

x=3

(4x-2)=4*3-2=10

(3x+1)=3*3+1=10

(2x+1)=2*3+1=5

perimeter = sum of all sides

10+10+5=25

25 cm answer