Question

Find the breath of the rectangle whose perimeter is 146cm and whose length is 40cm

Answer 1

2(L+B)= 146cm
2(40+L)=146cm
40+L=73cm
L= 73-40= 33cm.
So length will be 33 cm.

Answer 2

perimeter of rectangle is equal to 2(length+breath).according to question 146=2(40+breath)_____146=80+2(breath)____146-80=2(breath)___66=2*breath___66/2= breath=33