Question

A circle of radius 10 cm is cut out from a rectangle piece of an aluminium sheet having length 30cm and breadth 20cm. What is the area of the left over aluminium sheet ? (Take pie = 3.14)​

Answer 1

Answer:

286 cm²

Step-by-step explanation:

Area of circle= pi×r²

or 3.14×100 (10²)

or 314 cm²

Area of sheet= length × breadth

or 30×20

or 600cm²

So left over aluminium sheet= 600-314

or 286 cm²

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Answer 2

Answer

find area of sheet first

area of rectangular piece of alluminium = 30m × 20m = 600m²

now are of circle

area of circle = πr² = 3.14 × 10 × 10

= 314m²

now its asked remaining

remaining = 600m² - 314m² = 286m²

Step-by-step explanation:

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