Q.4 The perimeter of a rectangular sheet is 100 cm. If the length is 35 cm, find its breadth. Also find the area.

Given: Perimeter = 100 cm
Length = 35 cm
Perimeter = 2(l + b)
100 = 2(35 + b)
Or, \(\frac{100}{2}= 35+b \)
Or, b= 50 - 35 = 15 cm
Area = l×b = 35cm × 15 cm =\( 525 cm^2 \)