PRACTISE 6.4 A. Solve the following word problems. 1. Arvind bought a computer which has a monitor of length 30 inches and breadth 20 inches. Find the perimeter of the computer.

To find the perimeter of a rectangle, we use the formula: Perimeter = 2 x (length + breadth). Here, Arvind's monitor has a length of 30 inches and a breadth of 20 inches. So, the perimeter is 2 x (30 + 20) = 2 x 50 = 100 inches. Arvind's monitor wraps around with a perimeter of 100 inches! Now, let’s say Arvind wanted to decorate his workspace. Knowing the perimeter allows him to remember how much trim or border to buy! If he plans to put a decorative frame around the monitor, he’d need a total of 100 inches of decorative materials. That’s a great practical use of perimeter in everyday life!