Mathematics MCQs

Page No. 28

If the side of a square is increased by 25 % then how much percent does it’s area get increased:


a125


b156.25


c50


d56.25


View Answer 56.25

The length of a hall is (4/3) times its breadth. If the area of the hall be 300 square meters the difference between the length and breadth is__________?


a15m


b4m


c3m


dNone of these


View Answer None of these

The area of a rectangle is thrice that of a square. The length of the rectangle is 40 cm and the breadth of the rectangle is (3/2) times of the square. The side of the square in cm is__________?


a15


b20


c30


d60


View Answer 20

The length of a rectangle is increased by 60 %. By what percent would the width have to be decreased to maintain the same area?


a37 ½ %


b60 %


c75 %


d120%


View Answer 37 ½ %

If the ratio of the areas of two squares is 9:1 ratio of their perimeters is_________?


a9:1


b3:1


c3:4


d1:3


View Answer 3:1

A hall 20 m long and 15 m broad is surrounded by a verandah of uniform width of 2.5 m. The cast of flooring the verandah at the rate of Rs 3.50 per sq. Meter is__________?


aRs. 500


bRs. 600


cRs. 700


dRs. 800


View Answer Rs. 700

The length and breadth of a square are increased by 40% and 30% respectively. The area of the resulting rectangle exceeds the area of the square by:________?


a42%


b62%


c82%


dnone of these


View Answer 82%

The length of a rectangular room is 4 meters. If it can be partitioned into two equal square rooms. What is the length of each partition in meters:________?


a1


b2


c4


dData Inadequate


View Answer 2

A rectangle has 15 cm as its length and 159 cm2 as its area. Its area is increased to 1 1/3 times the original area by increasing only its length its new perimeter is:_________?


a50 cm


b60 cm


c70 cm


d80 cm


View Answer 60 cm

The length of a rectangle is twice its breadth, if length is decreased by 5 cm and the breadth is increased by 5 cm. The length of the rectangle is_________?


a20 cm


b30 cm


c40 cm


d50 cm


View Answer 40 cm

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