Question

find the area of circle whose diameter is 84 cm stpe by step

Answer 1

Answer:

≈5541.77cm²

d Diameter

84

cm

Using the formulas

A=πr2

d=2r

Solving forA

A=1

4πd2=1

4·π·842≈5541.76944cm²

Step-by-step explanation:

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Answer 2

Answer:

Area of the circle is 264 sq cm

Step-by-step explanation:

Diameter is 2×radius

Thus radius is 84/2=42

Now area of a circle is 2πr.

So 2×22/7×42

Thus area is 2×22×6 as 7×6 is 42

Therefore area of circle is 264 sq cm