MATHEMATICS CLASS 8 E MENSURATION

If diagonals of a rhombus are 40 cm and 42 cm then the area is

• 840m2

• 420m2

• 150m2

• 568m2

A trapezium with area 28m2 has altitude 4m. The sum of its parallel sides is

• 7m

• 14m

• 39m

• 23m

The ratio of 2 diagonals of a rhombus is 3:2 . If it's area is 588m2 then the length of the shorter diagonal will be.

• 42m

• 36m

• 28m

• 14m

If each non parallel sides of a trapezium is5cm and parallel sides are 31cm and 25 cm .. then the area will be.

• 56m2

• 64m2

• 112m2

• 168m2

In the figure . A BCDE is a pentagon in which AB||EC and total height is 20 cm . The area of pentagon A BCDE is

• 290cm2

• 370cm2

• 500cm2

• 580cm2

If the total surface area of a cube is 24cm2 , then it's volume is

• 8cm3

• 24cm3

• 64cm3

• 72cm3

If the dimensions of a rectangle are increased by 100%, then it's area is increased by

• 400%

• 300%

• 200%

• 100%

The parallel sides of a trapezium are I the ratio 3:4 and the distance between them is 12 m . If it's area is 168m2, then the length of shorter of the parallel sides is.

• 16 cm

• 8 cm

• 4 cm

• 12 cm

If the edges of a cuboid are in the ratio 1:2:3 and it's volume is 1296cm3 , then the sum of its sides is.

• 12cm

• 24cm

• 36cm

• 48cm

The area of a trapezium becomes 4 times if its height is doubled.

• True

• False