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Question

28cm
Estimate the area of the circle. Use 3.14 or 22/7 for n

Answer 1

To estimate the area of the circle, we need to use the formula:

Area = π × r²

where π (pi) is approximately 3.14 or 22/7, and r is the radius of the circle. The circle's diameter is given as 28 cm, so the radius is half of that, or 14 cm.

Using 3.14 for π:

Area = 3.14 × (14 cm)²
Area = 3.14 × 196 cm²
Area ≈ 615.44 cm²

Using 22/7 for π:

Area = (22/7) × (14 cm)²
Area = (22/7) × 196 cm²
Area ≈ 616 cm²

So, the estimated area of the circle is about 615.44 cm² using 3.14 for π, and 616 cm² using 22/7 for π.