SURFACE AREA AND VOLUMES

If the perimeter of one of the faces of a cube is 40 cm, then its volume is:

• 6000 cm³

• 1600 cm³

• 600 cm³

• 1000 cm³

Volume of hollow cylinder

• π(R² – r²)h

• πR²h

• πr²h

• πr²(h₁ – h)

The radius of a sphere is 2r, then its volume will be

• 4πr³

• 4/3 πr³

• 32/3 πr³

• 8/3 πr³

The lateral surface area of a cube is 256 m³. The volume of the cube is

• 512 m³

• 64 m³

• 256 m³

• 216 m³

• 0.01

• 1000

• 0.001

• 1000000

• 100

• 1/100

• 1/1000000

• 1000000

The formula to find the total surface area of a cuboid of length (l), breadth (b) and height (h) is:

• 2(l+b)h

• lb+bh+hl

• 2(lbh)

• 2(lb+bh+hl)

The volume of a hemisphere whose radius is r is:

• 4πr³

• 4/3 πr³

• ⅔ π r³

• 2πr³

 If a right circular cone hs radius 4 cm and slant height 5 cm then what is its volume?

• 16 π cm³

• 14 π cm³

• 12 π cm³

• 18 π cm³

In a cylinder, the radius is doubled and height is halved, the curved surface area will be

• Halved

• Doubled

• Same

• Four times