the sides of a rectangle are 20 cm and 15 cm ,if each side of a rectangle is increased by 20% find the percentage increase in the area.....???
Please can you tell me ???
with statements.....
Answers
Answered by
2
length(l)=20
breadth(b)=15
area=20*15
=300
When increased by 20percentage
l=20+4
l=24
b=15+3
b=18
area=24*18
=432
area increased=432-300/100
=1.32 percentage
breadth(b)=15
area=20*15
=300
When increased by 20percentage
l=20+4
l=24
b=15+3
b=18
area=24*18
=432
area increased=432-300/100
=1.32 percentage
bisunitha9pb839s:
i think this would be the answer
its coming 44 precent...
yes your answer is correct
so give solution....
what do you mean by that
ok i will tell u the solution.
it was given in my book answer but solution was not ...
so I asked solution
wait
(132/300*100)=132/3=44 percentage
Answered by
9
Find the area of the rectangle:
Area = Length x Breadth
Area = 20 x 15 = 300 cm²
Find the new length and breadth:
Increase in length = 20% x 20 = 0.2 x 20 = 4 cm
New length = 20 + 4 = 24 cm
Increase in breadth = 20% x 15 = 0.2 x 15 = 3 cm
New Breadth = 15 + 3 = 18 cm
Find the new area:
Area = Length x Breadth
Area = 24 x 18 = 432 cm²
Find the change in area:
Change = 432 - 300 = 132 cm²
Find the percentage increase:
Percentage increase = 132/300 x 100 = 44%
Answer: The area has increased by 44%
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