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arpolin15
04.04.2020 •
Mathematics
A rectangle field has an anrea of 40cm^2. if one side of the field is 3m longer than the other side, find the new area of the field where the length of each side is increased by 10%
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Ответ:
The area of the field where the length of each side is increased by 10% is 48.4
.
Step-by-step explanation:
The given is,
A rectangle field has an area of 40![cm^{2}](/tpl/images/0582/7352/82289.png)
If one side of the field is 3 cm longer than the other side
The length of new area in each side is increased by 10%
Step:1
Let,
From given.
Formula for area of rectangle,
40 = ( b+3) × b
40 =
+ 3b
Solving the above the equation,
b = 5 cm
l = 8 cm
Step:2
If the area of rectangle increased by 10%,
l = 8 + ( 8 ×
)
= 8.8
b = 5 + ( 5 ×
)
= 5.5
Area of rectangle is,
a = ( 8.8 × 5.5 )
= 48.4 square centimeters
Result:
The area of the field where the length of each side is increased by 10% is 48.4
, if a rectangle field has an area of 40 square centimeters and one side of the field is 3 cm longer than the other side.
Ответ:
1
Step-by-step explanation:
9-8=1
Hope that this is helpful.
Have a nice day.