A chord of a circle of radius 14 cm subtends 60o at the centre. Then, the area of the major sector is.
510 cm2
511 cm2
512 cm2
513 cm2
The total surface area of a cube whose volume is 1000 cu.cm is
100 cm2
300 cm2
400 cm2
600 cm2
The paint in a certain container is sufficient to paint on area equal to 9.375 sq.m.How many bricks of dimension 22.5 cm x 10 cm x 7.5 cm can be painted out of this container.
50
100
120
150
The lateral surface area of a cuboid of length 80 cm,breadth 40 cm and height 20 cm is
4000 sq.cm
4200 sq.cm
4500 sq.cm
4800 sq.cm
A chord of a circle of radius 14 cm subtends a right angle at the centre. Then, the area of the minor sector is.
154 cm2
156 cm2
158 cm2
160 cm2
The arc length of a sector is 66 cm and the central angle is 30o. Then its radius is
110 cm
115 cm
120 cm
126 cm
The ratio of the total surface area and lateral surface area of a cube is
1:2
1:3
2:3
3:2
The central angle of a semi circle is
180o
360o
90o
270o
A closed iron tank 12 m long,9 m wide and 4 m deep is to be made. The cost of iron sheet used at the rate of Rs.5 per meter sheet being 2 m wide is
Rs.450
Rs.620
Rs.800
Rs.960
A closed box 12 cm x 10 cm x 8 cm is to be painted from outside.The area to be painted is
1184 sq.cm
296 sq.cm
592 sq.cm
888 sq.cm