Question

an ice cream was frozen in a cylindrical mould of radius 35 cm and height 21 cm .ali was asked to put the ice cream into the cones till the brim of radius 5cm and height 4.2cm . how many cones can be filled ?these ice creams were given to the children one each. how many children got ice cream ?what value do you learn from this activity?

Answer 1

Answer: Number of cones are 735



Step-by-step explanation:

Radius of cylinder = 35cm (Given)

Height of cylinder = 21cm (Given)

Step 1- Volume of cylinder = π r square H  (r = 22/7)

Volume = 22/7 * 35 * 35 * 21

Volume = 80850

Step 2- Radius of cone = 5cm (Given)

Height of cone = 4.2cm (Given)

Volume of cone = 1/3 π r square h

Volume = 1/3 * 22/7 * 5 * 5 * 4.2

Volume = 330/3 = 110

Step 3- Number of cones = Volume of cylinder / Volume of cone

Number of cones = 80850 / 110

Number of cones = 735 [Answer]

Note - I hope this will help you. Feel free to ask any query.

Answer 2

Answer:

The number of children who got ice-cream is 735 .

Step-by-step explanation:

Given as :

The radius of cylinder = r = 35 cm

The height of cylindrical mould = h = 21 cm

So, Volume of cylindrical mould = π × radius² × height

Or, Volume of cylindrical mould = π × (35 cm)² × 21 cm

Or, Volume of cylindrical mould = 80776.5 cm³

Again

Let The number of ice-cream cone = n

The ice cream is now put into cones

The radius of cone = 5 cm

The height of cone = 4.2 cm

So, The volume of cone = $\dfrac{1}{3}$ × π × radius² × height

Or, The volume of cone = $\dfrac{1}{3}$ × π × (5 cm)² × 4.2 cm

or, The volume of cone = 109.9 cm³

Now,

The number of ice cream cone = $\dfrac{volume of cylindrical mould}{volume of cone}$

i.e n = $\dfrac{80776.5}{109.9}$

∴  n = 735

So, The number of children who got ice-cream = number of ice-cream cone

i.e The number of children who got ice-cream = n = 735

Hence, The number of children who got ice-cream is 735 . Answer