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If two adjacent sides of asquare paper a...

If two adjacent sides of asquare paper are decreased by `20%` and `40%` respectively, by what percentage does the new area decrease ?

A

`50%`

B

`52%`

C

`60%`

D

`48%`

Text Solution

Verified by Experts

The correct Answer is:
B
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ARIHANT PUBLICATION PUNJAB-MENSURATION-Chapter Exercise
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  2. In the given figure OABC is a rhombus whose three vertices A,B, C lie ...

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  3. If two adjacent sides of asquare paper are decreased by 20% and 40% r...

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  4. What is the ratio of side and height of an equilateral triangle?

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  5. The radius of an iron rod decreased to one-fourth. If its volume remai...

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  6. The area of a triangle with base x unit is equal to the area of a squ...

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  7. The ratio between the length and perimeter of a rectangular plot is 1 ...

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  8. Diameter of a jar cylindrical in shape is increased by 25%. By what...

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  9. Two square have sides x cma nd (2 x + 1) cm, respectively . The sum of...

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  10. If the circumference of a circle is 3 cm, then its area, in cm^(2) is

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  11. The area of a rectangle is A cm ^(2) and length is l cm. Its perimet...

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  12. A cube has a volume125 cm^(3) . Area of its one face is

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  13. A square and a circle have equal perimeters. The ratio of the area of ...

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  14. The circumference of the circular base of a cylinder is 44 cm and its ...

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  15. ABCD is a square with AB =(x = 16) cm and BC = (3x) cm . The perimete...

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  16. The scale of a map is given as 1 : 10000 . On the map, a forest occup...

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  17. 42 cubes each of side 1 cm area glured together to form a solid cubo...

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  18. The area of a trapezium -shaped field is 720 m^(2) , the distance bet...

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  19. The base of isosceles Delta ABC is 48 cm and its area is 168 cm^(2) ...

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  20. The area of square is (16)/(pi) area of a circle. The ratio of the si...

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