A cistern 5 m long and 8 m wide, contains water up to depth of 2 m 45 cm. Find the total area of wet surface.
1). 103 m2
2). 103.7 m2
3). 92 m2
4). 82.80 m2
A conical vessel of radius 7 cm and height 30 cm is completely filled with a liquid. From it, the liquid is poured into several conical vessels of radius 5 cm and height 21 cm, thereby filling them completely. What part of the last conical vessel will remain empty? Use π = 22/7.
Weight of a solid sphere of radius 6 cm is 4.78 kg. The weight of a hollow sphere made with same material, whose outer diameter is 16 cm and inner diameter is 12 cm, is
The area of a semicircle is 308 cm2. Calculate its perimeter (in cm).
1). 144
2). 49
3). 98
4). 72
In a triangle ABC, AD is angle bisector of ∠A and AB : AC = 3 : 4. If the area of triangle ABC is 350 cm2, then what is the area (in cm2) of triangle ABD?
1). 150
2). 200
3). 210
4). 240