Question

What is the length of the rectangle whose breadth is 10 cm and perimeter 60 cm

Answer 1

Answer:

• The length of the rectangle = 20 cm.

Given :

• Breadth of the rectangle = 10 cm.

• Perimeter of the rectangle = 60 cm.

To find :

• Length of the rectangle =?

Step-by-step explanation:

Breadth of the rectangle = 10 cm. And Perimeter of the rectangle = 60 cm. [Given]

Now,

We know that,

Perimeter of rectangle = 2 ( l+b )

Substituting the values in the above formula, we get,

➮ 60 cm = 2 ( l + 10 ) cm

➮ 60 cm = 2l + 20 cm

➮ 60 - 20 cm = 2l

➮ 40 cm = 2l

➮ 40 / 2 cm = l

➮ l = 20 cm

Therefore, The length of the rectangle = 20 cm.

Answer 2

breadth -10 cm

perimeter - 60 Cm

length = perimeter ÷2 = breadth

60cm ÷ 2 = 30 cm - 10cm= 20cm

length = 20cm