A cow is tethered at point `A` by a rope. Neither the rope nor the cow is allowed to enter the triangle `A B C`. `/_B A C=30^@`, `A B=A C=10 m`. (a) `(133\ pi)/6\ sq\ m` (b) `121\ pi\ sq\ m` (c) `132\ pi\ sq\ m` (d) `(176\ pi)/3\ sq\ m`

Find the length of a rope by which a cow must be tethered in order that it may be ble to graze an area of 154 sq m

The area of the circle that can be inscribed in a square of side 10 cm is (a) 40pi\ c m^2 (b) 30pi\ c m^2 (c) 100\ pi\ c m^2 (d) 25\ pi\ c m^2

The area of the circle that can be inscribed in a square of side 10 cm is (a) 40pi\ c m^2 (b) 30pi\ c m^2 (c) 100\ pi\ c m^2 (d) 25\ pi\ c m^2

If A+B+C=pi and m/_C is obtuse then tan A.tan B is

A horse is tied at the corner of a rectangular field whose length is 20 m and width is 16 m, with a rope whose length is 14 m. Find the area which the horse can graze: (a) 144 sq. m (b) 154 sq. m (c) 156 sq. m (d) 164 sq. m

A sphere of radius 100 mm shrinks to radius 98 mm, then the approximate decrease in its volume is 12000\ pi\ m m^3 (b) 800\ pi\ m m^3 (c) 80000\ pi\ m m^3 (d) 120\ pi\ m m^3

A sphere of radius 100 mm shrinks to radius 98 mm, then the approximate decrease in its volume is 12000\ pi\ m m^3 (b) 800\ pi\ m m^3 (c) 80000\ pi\ m m^3 (d) 120\ pi\ m m^3

The perimeter of a rectangular field is 480 metres and the ratio between the length and the breadth is 5:3. The area is (a) 1350 sq.m (b) 1550 sq.m (c) 13500 sq.m (d) 15500 sq. m

A circular pond has area equal to 616 m2. A circular stage is made at the centre of the pond whose radius is equal to half the radius of the pond. What is the area where water is present? (a) 454 sq. m (b) 462 sq. m (c) 532 sq. m (d) 564 sq. m