Q. 13.8( 23 Votes )

# The radii of two circular ends of frustum shape bucket are 14 cm and 7 cm. Height of the bucket is 30 cm. How many liters of water it can hold? (1 litre = 1000cm^{3})

Answer :

The two radii of frustum are, r_{1} = 14cm and r_{2} = 7cm

Height of bucket, H = 30 cm

As we know that,

⇒ V = 10780 cm^{3}

Now, as 1litre = 1000cm^{3}

⇒ V = 10.780 litre

∴ Bucket can hold 10.780 litres of water

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A washing tub in the shape of a frustum of a cone has height 21 cm. The radii of the circular top and bottom are 20 cm and 15 cm respectively. What is the capacity of the tub?

MHB - Mathematics Part-2The radii of two circular ends of frustum shape bucket are 14 cm and 7 cm. Height of the bucket is 30 cm. How many liters of water it can hold? (1 litre = 1000cm^{3})

The circumferences of circular faces of a frustum are 132 cm and 88 cm and its height is 24 cm. To find the curved surface area of the frustum complete the following activity.

Circumference_{1} = 2πr_{1} = 132

Circumference_{2} = 2πr_{2} = 88

Slant height of frustum,

Curved Surface area of frustum = π(r_{1} + r_{2})l

MHB - Mathematics Part-2