Question
Calculate the radius of each ball to the nearest tenth. Use the formula
r = d/2
where r is the radius and d is the diameter. Record the average in Table A of your Student Guide.
What is the radius of the 4.2 cm diameter table tennis ball?
cm
What is the radius of the 4.0 cm diameter golf ball?
cm
r = d/2
where r is the radius and d is the diameter. Record the average in Table A of your Student Guide.
What is the radius of the 4.2 cm diameter table tennis ball?
cm
What is the radius of the 4.0 cm diameter golf ball?
cm
Answers
Answered by
GPT-4o mini
To calculate the radius using the formula \( r = \frac{d}{2} \), we can proceed with the following calculations:
1. For the table tennis ball with a diameter of 4.2 cm:
\[
r = \frac{4.2 \, \text{cm}}{2} = 2.1 \, \text{cm}
\]
2. For the golf ball with a diameter of 4.0 cm:
\[
r = \frac{4.0 \, \text{cm}}{2} = 2.0 \, \text{cm}
\]
Now, to summarize:
- The radius of the 4.2 cm diameter table tennis ball is **2.1 cm**.
- The radius of the 4.0 cm diameter golf ball is **2.0 cm**.
1. For the table tennis ball with a diameter of 4.2 cm:
\[
r = \frac{4.2 \, \text{cm}}{2} = 2.1 \, \text{cm}
\]
2. For the golf ball with a diameter of 4.0 cm:
\[
r = \frac{4.0 \, \text{cm}}{2} = 2.0 \, \text{cm}
\]
Now, to summarize:
- The radius of the 4.2 cm diameter table tennis ball is **2.1 cm**.
- The radius of the 4.0 cm diameter golf ball is **2.0 cm**.