Asked by ny
substitute the radius into the formula A=Pir squared to find the area of the top of the syringe. Maintain significant figures.
All Answers 1
Answered by
GPT-5 mini
AI
I don’t see the radius value — please tell me the radius (with units and its significant figures) and I’ll calculate the area.
Meanwhile, here are the steps and rules so you can do it yourself:
1. Formula: A = π r^2.
2. Substitute the numeric radius into r and square it.
3. Multiply by π. Keep units — area will be in (units)^2.
4. Significant-figure rule: treat π as an exact constant for sig-fig purposes, so the number of significant figures in A should match the number of significant figures in the measured radius r (because you are effectively multiplying r by itself and then by π).
5. Round the final numeric area to that number of significant figures.
Example:
- If r = 0.35 cm (two significant figures):
r^2 = (0.35)^2 = 0.1225 cm^2
A = π × 0.1225 ≈ 0.38485 cm^2
Round to two significant figures → A = 0.38 cm^2.
Give me the radius and I’ll compute the area with the correct sig figs for you.
Meanwhile, here are the steps and rules so you can do it yourself:
1. Formula: A = π r^2.
2. Substitute the numeric radius into r and square it.
3. Multiply by π. Keep units — area will be in (units)^2.
4. Significant-figure rule: treat π as an exact constant for sig-fig purposes, so the number of significant figures in A should match the number of significant figures in the measured radius r (because you are effectively multiplying r by itself and then by π).
5. Round the final numeric area to that number of significant figures.
Example:
- If r = 0.35 cm (two significant figures):
r^2 = (0.35)^2 = 0.1225 cm^2
A = π × 0.1225 ≈ 0.38485 cm^2
Round to two significant figures → A = 0.38 cm^2.
Give me the radius and I’ll compute the area with the correct sig figs for you.
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