1.
The radius of the cylinder and cone are equal. find its volumes ratio:
Answer: Option 'B'
radius of the cylinder = radius of the cone
πr2h = 1/3 πr2h 1 : 1/3
3 : 1
2.
The lateral surface area of cube is 100 sq.units. find the volume of cube?
Answer: Option 'C'
Lateral surface = 4 a2 = 100 sq.units
a2 = 25
a = 5.
Cube volume = a3 => 125 m3
3.
The lateeral surface area of cuboid length 12 m, breadth 8 m and height 6m.
Answer: Option 'D'
Cuboid lateral surface = 2h(l+b)
= 2 × 6 (20) = 240 m2
4.
The radius of a cone is 4 m, height 5 m. Find the curved surface area?
Answer: Option 'B'
Cone curved surface area = πrl = 22/7 × 4 × 5 = 440/7 = 62 6/7
Slant height (l) = √r2+h2 = √16+9 = √25 = 5
5.
Find the volume of cuboid 15 m length, 9 m breadth and 2 m height.
Answer: Option 'D'
Cuboid volume => l × b × h => 15 × 12 × 8 = 1440 m3