If the length of a rectangular is increased by 20% and the width is decreased by 20% then the area.
Created: 6 years ago |
Updated: 2 years ago
best des
let L = the original length and W = the original width;
thus, the original area of the rectangle is LW
and the new area is 1.2L x 0.8W = 0.96LW,
so the area is decreased by = (LW - 0.96LW)/LW x 100% = 4%.
ans: decreased by 4%
Md Azizur Rahman
Founder of Satt
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