The area of the circle is \( \pi \times 4^2 = 16\pi \) cm².
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- A circle is inscribed in a square. If the area of the square is 64 cm², what is the area of the circle?
- The side of the square is \( \sqrt{64} = 8 \) cm.
- The diameter of the circle is 8 cm, so the radius is 4 cm.
- A train travels 120 miles in 2 hours, then another 180 miles in 3 hours. What is the average speed of the train for the entire trip?
- Total distance is \( 120 + 180 = 300 \) miles.
- Total time is \( 2 + 3 = 5 \) hours.
