MATHS CLASS 8 CH - 11 MENSURATION MENTAL MATHS

Area of a trapezium =

• 1/2(sum of parallel sides)

• 1/2(sum of parallel sides) *h

• none

Area of a rhombus =

• d₁*d₂

• 1/2*d₁*d₂

• none

Surface area of a cuboid is

The volume of a cuboid is

1 cm³ =

If the total surface area of a cube is 2400cm², find the length of its side

ABCD is a rectangle such that AB = 20 cm . AD = 7 cm . Find the area of the shaded region.

Find the circumference of a circle whose area is 154 cm²

• 54 cm

• 44 mm

• 44 m

• 44 cm

Aditi made a cubical box without a lid with edge 8 cm . How much cardboard is used in making it ?

The diameter of a wheel is 70 cm. How much distance will be covered in 100 rounds?