10. 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.(the answer 18.4m i just nees the solution i will mark them brainliest who answers this question correctly)
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Answer:
20.8 m²
Step-by-step explanation:
Length of the wallpaper = 400 cm = 4 m
Breadth of the wallpaper = 520 cm = 5.2 m
Area of the wallpaper = Length x Breadth
= ( 4 x 5.2 ) m²
= 20.8 m²
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