Math, asked by stylishstar99, 1 year ago

a rectangle has length as 20cm and breadth as 12cm.If the lrngth is increased by 5% and its breadtg is decreased by 3%,calculate the increase or decrease in its area

bishal49: 20 - 5% increase = 21 12 - 3% decrease = 11.64 . total area = 21× 11.64 = 244.44 ... increase area 4.44

Answers

Answered by vedansh3785

the area increase or decrease in its area is 40

Answered by krchoudhary987

20 = 5%

Length =21

12=3%

Bredth =6.4

Before area = 20×12

Now 21×6.4

prantik736101: Answer:

Step-by-step explanation:
Original Rectangle:
Length = 20cm
Breadth = 15 cm
Therefore Area = 20 × 15
=300 cm^2
New Rectangle
Length = (5%of 20) + 20
= 21cm
Breadth = 15 - (3%of 15)
=15 - 0.45
=14.55 cm
Area = 21 × 14.55
=305.55 cm^2
Increased Area = 5.55 cm^2
Hope it helps you. This is the right answer.

stylishstar99: thanks bro

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