Question

25. From the following figure, Find the value of x.​

Answer 1

Step-by-step explanation:

x + 1 + 5x + 7 + 2x + 1 = 4x + 25

= 8x + 9 = 4x + 25

= 4x = 16

x = 4

Sides are:-

x + 1 = 4 + 1 = 5 cm

5x + 7 = 5 × 4 + 7 = 27 cm

2x + 1 = 2 × 4 + 1 = 9 cm

Perimeter =

4x + 25 = 4 × 4 + 25

= 16 + 25 = 41 cm

Answer 2

Step-by-step explanation:

Given-:

First side=> x+1

Second side=> 2x+1

Third side=> 5x+7

Perimeter=> 4x+25

To find-:

Value of x=?

Solution-:

Perimeter of triangle=sum of all sides

=>4x+25=x+1+2x+1+5x+7

=>4x+25=8x+9

=> 16=4x

=> x=4