The width of a rectangle is fixed at 22 cm. What lengths will makes the perimeter greater than 94 cm?
The length must be greater than ? cm.
Solution:-
Suppose length of rectangle is L
Perimetr of rectangle =2*(length+width)
According to question
94< 2*(L+22)
Divide both sides by 2
< L+22
47 < L+22
Subtract 22 from both sides
47-22 < L+22-22
L > 25
So length must be greater than 25 cm