A shopkeeper has one laddoo of radius 5 cm. With the same material, ho

1.	A shopkeeper has one laddoo of radius 5 cm. With the same material, how many laddoos of radius 2.5 cm can be made?
Answer» Volume of laddoo having radius 5 cm (V₁) = \(\frac{4}{3}\)x \(\frac{22}{7}\) x (5)³ = \(\frac{11000}{21}\) cm³ Also, Volume of laddoo having radius 2.5 cm (V₂) = \(\frac{4}{3}\)πr³ = \(\frac{4}{3}\) x \(\frac{22}{7}\) x (2.5)³ cm³ = \(\frac{1375}{21}\) cm³ Therefore, Number of laddoos of radius 2.5 cm that can be made = V₁/V₂ = \(\frac{11000}{1375}\) = 8

A shopkeeper has one laddoo of radius 5 cm. With the same material, how many laddoos of radius 2.5 cm can be made?

Answer»

Volume of laddoo having radius 5 cm (V₁) = \(\frac{4}{3}\)x \(\frac{22}{7}\) x (5)³

= \(\frac{11000}{21}\) cm³

Also, Volume of laddoo having radius 2.5 cm (V₂) = \(\frac{4}{3}\)πr³

= \(\frac{4}{3}\) x \(\frac{22}{7}\) x (2.5)³ cm³

= \(\frac{1375}{21}\) cm³

Therefore, Number of laddoos of radius 2.5 cm that can be made = V₁/V₂

= \(\frac{11000}{1375}\)

= 8