Question

If the perimeter of a square with side 10cm is same as the perimeter of a rectangle with length 15cm, find the breadth of the rectangle.

Answer 1

Answer:

the answer is 5 cm

Step-by-step explanation:

4a=2(l+b) given

2a=l+b

2×10=15+b (a=10 l=15)

20-15=b

5=b

Answer 2

$\huge\underline\bold\red{Given}$

• Perimeter of square = 10cm
• perimeter of square same as perimeter of rectangle
• Length of rectangle = 15cm

$\huge\underline\bold\red{Formulae}$

• Perimeter of square = 4 × side
• perimeter of rectangle 2(length+breadth)

$\huge\underline\bold\red{Solution}$

Perimeter of square = perimeter of rectangle

=> 4×10 = 2(15+breadth)

=> 40 = 30 + 2× breadth

=> 40-30 = 2×breadth

=> 10 = 2×breadth

=> Breadth = 10/2 = 5cm