Question

Sumit wants to put up wallpaper the wall of his room of dimensions 400 cm by 520 cm. Find the length of the wallpaper needed by Sumit in metres.

Answer 1

Step-by-step explanation:

Given that:-

• Length(l)=400 cm
• Breadth (b)= 520 cm.

Now, area of wall = l×b

• l × b = 400×520
• Area =208000 cm²

Since, 1 cm²=0.0001 meter²

So, 208000 × 0.0001 = 20.8 m²

So, the length of the wallpaper needed by Sumit in metres is 20.8 m².