patelareece patelareece

22-04-2024
Mathematics

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A circle has a diameter of 18 mm. Work out the area of this circle. Give your answer in terms of πT.

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jimrgrant1 jimrgrant1

22-04-2024

Answer:

A = 81π mm²

Step-by-step explanation:

The area (A) of a circle is calculated as

A = πr² ( r is the radius )

given diameter = 18 mm, then r = 18 ÷ 2 = 9 mm , then

A = π × 9² = 81π mm²

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