The price of pizza is proportional to the square of the radius of pizza and 3 pizzas of radius 6 cm cost Rs.486, then what will be the cost of two pizzas of radius 8 cm each?

The price of pizza is proportional to the square of the radius of pizza and 3 pizzas of radius 6 cm cost Rs.486, then what will be the cost of two pizzas of radius 8 cm each? Correct Answer Rs. 576

GIVEN:

The price of pizza is proportional to the square of radius of pizza and 3 pizzas of radius 6 cm each costs Rs.486.

CONCEPT:

Basic ratio concept.

CALCULATION:

Price of pizza is proportional to the square of radius of pizza.

Price of one pizza of radius 6 cm = 486/3 = Rs.162

Price of one pizza of radius 8 cm = 162 × (82/62) = Rs.288

So,

Price of two pizzas of radius 8 cm each = 288 × 2 = Rs.576

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