The side of a square is increased by 25% then how much % does its area increases?

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The difference between the radi of the smaller circle and the bigger circle is 7cm and the difference between the area of two circles is 1078Sq.cm Radius of the smaller circle is_________?

A. 17.5cm B. 21cm C. 28cm D. None of these...

The surface area of a (10cm x 4cm x3cm) brick is__________?

A. 84 Sq.cm B. 124 Sq.cm C. 164 Sq.cm D. 180 Sq.cm...

A rectangular field has area equal to 150 sq m and perimeter 50 m. Its length and breadth must be________?

A. 12 m, 10 m B. 13 m, 12 m C. 14 m, 11 m D. 15 m, 10 m...

The area of sector of a circle whose radius is 12 metro and whose angle at the center is 42° is?

A. 26.4 m2 B. 39.6 m2 C. 52.8 m2 D. 79.2 m2...

If the base of rectangle is increased by 10 % and the area is unchanged then the corresponding altitude must be decreased by:________?

A. 9 1/11 % B. 10% C. 11% D. 11 1/9 %...