17 Aug 2014

AREA AND VOLUME (MENSURATION) PART-4

AREA AND VOLUME (MENSURATION) PART-4 QUERY 31 The length of a hollow thick cylindrical metallic pipe is 6 cm and its total surface area including the surfaces at the ends is 98π cm². If the outer diameter is 8 cm, then the inner diameter in cm is? A) 6.5 B)

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17 Aug 2014

AREA AND VOLUME (MENSURATION) PART-3

AREA AND VOLUME (MENSURATION) PART-3 QUERY 21 If each side of a rectangle is increased by 50%, then its area will be increased by? A) 50% B) 100% C) 125% D) 250% MAHA GUPTA Remember this: CASE-I: If both the quantities/amounts increase, the net effect: (a + b) + ab/100

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17 Aug 2014

AREA AND VOLUME (MENSURATION) PART-2

AREA AND VOLUME (MENSURATION) PART-2 QUERY 11 The radius of a cylinder is 10 cm and height is 4 cm. The number of centimeters that may be added either to the radius or to the height to get the same increase in the volume of the cylinder is? A) 4

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17 Aug 2014

AREA AND VOLUME (MENSURATION) PART-1

AREA AND VOLUME (MENSURATION) PART-1 QUERY 1 If the length of a rectangle is increased in the ratio 6:7 and breadth is diminished in the ratio 5:4 then its area will be diminished in the ratio? A) 15:14 B) 15:13 C) 14:15 D) 10:15 RONNIE BANSAL Let the length of

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