Last Updated On [03-11-2023]
A student was asked to measure the length and breadth of a rectangle. By mistake, he measured the length 20% less and breadth 10% more. If its original area is 250 sq. units then the area after this measurement is
a)
280 sq. units
b)
270 sq. units
c)
260 sq. units
d)
220 sq. units
A student was asked to measure the length and breadth of a rectangle. By mistake, he measured the length 20% less and breadth 10% more. If its original area is 250 sq. units then the area after this measurement is
a)
280 sq. units
b)
270 sq. units
c)
260 sq. units
d)
220 sq. units
Question ID - 55863 :-
A student was asked to measure the length and breadth of a rectangle. By mistake, he measured the length 20% less and breadth 10% more. If its original area is 250 sq. units then the area after this measurement is
a)
280 sq. units
b)
270 sq. units
c)
260 sq. units
d)
220 sq. units
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A student was asked to measure the length and breadth of a rectangle. By mistake, he measured the length 20% less and breadth 10% more. If its original area is 250 sq. units then the area after this measurement is |
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a) |
280 sq. units |
b) |
270 sq. units |
c) |
260 sq. units |
d) |
220 sq. units |
% change in area=
where 
∴ % change in area = 
Now, original area=250 sq. unit
∴ Required area = 250-12% of 250
= 250-30=220 sq. unit
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A parabola |
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crosses the 
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) both to the right of the origin. A circle also passes through these two points. The length of a tangent from the origin to the circle is
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