Question

maine brainly download kiya tha study ke liye
lekin yha to study hoti nhi hai
aur 20 Dec se pre board hai
padayi ki nhi hai bilkul
isliye faltu ke app delete karne ka socha hai​

Answer 1

$\huge{\sf{Question}}$

Two sides of a triangle are 5 and 7 cm longer than the third side. If the perimeter is 21cm, find the length of each side ?

$\huge{\sf{Given:-}}$

Let the third side be x

Then,

Length of first side = (x+5)cm

Length of second side = (x+7)cm

Length of third side = x cm

Perimeter = 21cm

$\huge{\sf{Solution:-}}$

Perimeter of triangle = Sum of their sides

$\longrightarrow$ $\sf{(x+5+x+7+x)cm= 21cm}$

$\longrightarrow$ $\sf{(3x+12)cm = 21cm}$

$\longrightarrow$ $\sf{3x=(21-12)cm}$

$\longrightarrow$$\sf{3x=9}$

$\longrightarrow$$\sf{x= \frac{9}{3}}$

$\longrightarrow$$\sf{x=3}$

_______________________________

$\sf{\red{Therefore,the\: sides\:are:-}}$

First side = (3+5)=8cm

Second side = (3+7)=10cm

Third side = 3cm

Answer 2

Answer:

1+3=4 and 4 root is 2 and 2 divided by 2 is 1