9 cbse surface area and volume

If radius of a cylinder is 4 cm and height is 10 cm then total surface area of a cylinder is

• 440 sq cm

• 352 sq cm

• 400 sq cm

• 412 sq cm

The curved surface area of a right circular cylinder of height 14 cm is 88 sqcm. The diameter of the base is

• 2 cm

• 3 cm

• 4 cm

• 6 cm

The diameter of the base of a cone is 10.5cm, and its slant height is 10 cm. The curved surface area is

• 150 sqcm

• 165 sq cm

• 177 sq cm

• 180 sq cm

The surface area of a sphere of radius 14 cm is

• 1386 sqcm

• 1400 sqcm

• 2464 sqcm

• 2000 sqcm

The surface area of cuboid shaped box having length=80cm, breadth=40cm and height=20cm is

• 11200sqcm

• 13000sqcm

• 13400sqcm

• 12000sqcm

A well with 10m inside diameter is dug 14m deep. Earth taken out of it is spread all around it to make an embankment of height 14/3 m. Find the width of the embankment.

• 4 m

• 4.3m

• 6m

• 5m

Two right circular cones of equal curved surface areas have slant heights in the ratio of 3:5. Find the ratio of their radii.

• 3:5

• 5:3

• 4:5

• 4:1

If the radius of a sphere is doubled, then what is the ratio of their surface area?

• 2:1

• 1:4

• 4:1

• 1:2

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

• 6000 cubecm

• 1600 cubecm

• 1000 cubecm

• 600 cubecm

The total surface area of a cube is 96 sqcm. The volume of the cube is

• 8 cubecm

• 512 cubecm

• 64cubecm

• 27 cubecm