Area, General Mathematics

Question: The perimeter of a rectangular filed is`480` metres and the ratio between the length and breadth is`5 : 3.`The area of the field is :
A
`7200 m^2`

B
`15000 m^2`

C
`13500 m^2`

D
`54000 m^2`

Note: Let length = 5x breadth = 3x. Then, `2 (5x + 3x)` `= 480 or x = 30.` :. length `= 150 m` & breadth` = 90 m.` Area`= (150 xx 90) m^2` `= 13500 m^2.`
1. Report
Question: If the the length and breadth of a rectangular plot are increased by `50%` and `20%`respectively, then the new area is how many times the original area
A
`5/9`

B
`10`

C
`9/5`

D
None of these

Note: Not available
1. Report
Question: If each side of a square is increased by 50%, the ratio of the area of the resulting square to the area of the given square is :
A
`5 : 4`

B
`9 : 4`

C
`4 : 5`

D
`4 : 9`

Note: Not available
1. Report
Question: The length of a blackboard is 8 cm more than its breadth. If the length is increased by 7 cm and breadth is decreased by 4 cm, the area remains the same. The length and breadth of the black board (in cms) will be :
A
`28, 20`

B
`34, 26`

C
`40, 32`

D
`56, 48`

Note: Not available
1. Report
Question: If the diagonal of a square is doubled to make the diagonal of another square the area of the new square will :
A
become two-fold

B
become three-fold

C
become four-fold

D
remain the same

Note: Not available
1. Report
Question: The area of a rectangle is equal to the area of a circle. what is the length of the rectangle ? To find out the answer, which of the following informations given in statements P and Q is/are sufficient. P: The diameter of the circle is 28 cm. Q: The breadth of the rectangle is 22 cm.
A
Only P is sufficient

B
Only Q is sufficient

C
Both P and Q are needed

D
Even both P & Q are not sufficient

Note: Not available
1. Report
Question: A hall 20 m long and 15 broad is surround by a verandah of uniform width of 2.5 m. The cost of flooring the verandah at Rs. 3.50 per square metre is :
A
Rs. 500

B
Rs. 600

C
Rs. 700

D
Rs. 800

Note: Not available
1. Report
Question: The number of marble slabs of size 20 cm`xx` 30 cm required to pave the floor of a square room of side 3 metres, is :
A
100

B
150

C
225

D
25

Note: Not available
1. Report
Question: If each side of a square is increased by 25%, its area is increased by :
A
25%

B
50%

C
40.5%

D
56.25%

Note: Not available
1. Report
Question: A man walking at the speed of 4 kmph crosses a square filed diagonally in 3 minutes. The area of the filed is :
A
`18000 m^2`

B
`20000 m^2`

C
`19000 m^2`

D
`25000 m^2`

Note: Length of diagonal = Distance covered in 3 min.at 4 km/hr
1. Report

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Question: The perimeter of a rectangular filed is`480` metres and the ratio between the length and breadth is`5 : 3.`The area of the field is :

Question: If the the length and breadth of a rectangular plot are increased by `50%` and `20%`respectively, then the new area is how many times the original area

Question: If each side of a square is increased by 50%, the ratio of the area of the resulting square to the area of the given square is :

Question: The length of a blackboard is 8 cm more than its breadth. If the length is increased by 7 cm and breadth is decreased by 4 cm, the area remains the same. The length and breadth of the black board (in cms) will be :

Question: If the diagonal of a square is doubled to make the diagonal of another square the area of the new square will :

Question: The area of a rectangle is equal to the area of a circle. what is the length of the rectangle ? To find out the answer, which of the following informations given in statements P and Q is/are sufficient. P: The diameter of the circle is 28 cm. Q: The breadth of the rectangle is 22 cm.

Question: A hall 20 m long and 15 broad is surround by a verandah of uniform width of 2.5 m. The cost of flooring the verandah at Rs. 3.50 per square metre is :

Question: The number of marble slabs of size 20 cm`xx` 30 cm required to pave the floor of a square room of side 3 metres, is :

Question: If each side of a square is increased by 25%, its area is increased by :

Question: A man walking at the speed of 4 kmph crosses a square filed diagonally in 3 minutes. The area of the filed is :