Question

if the length of a rectangle is increased by 30% and the width of the same rectangle is decreased by 30% what is the effect on the area of the rectangle? It is increased by 60% it is unchanged it is decreased by 15% it is decreased by 9%

Answer 1

Answer:60

Step-by-step explanation:30%+30%=60% since it is a rectangle i thing this is the answer

Answer 2

The area of the given rectangle will decrease by 9 % so option (D) will be correct.

What is a rectangle?

The rectangle is a geometrical figure in which opposite sides are equal.

The angle between any two consecutive sides will be 90 degrees.

Area of rectangle = length × width.

Perimeter of rectangle = 2( length + width).

Area of rectangle is given by = Length(L) × Width(W)

Given,

The length of a rectangle is increased by 30%

So,

New light L' = 1.3L

width of the same rectangle is decreased by 30%

So,

New width(W') = 0.70W

Now,

New area = L'W'

1.3L × 0.70W = 0.91LW = 0.91 Old area

Hence the percentage decrement

(Old area - 0.91 old area)/old area  × 100 = 9%.

Hence, The area of the given rectangle will decrease by 9 %

For more about rectangles,

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