Brian grilled a hamburger. The diameter of the hamburger was 5 cm. What was the area of burger?
To find the area of a circle, we use the formula:
Area = pi * radius^2
The diameter of the hamburger is 5 cm, so the radius (half the diameter) is 5 cm / 2 = 2.5 cm.
Now we can calculate the area:
Area = pi * 2.5^2
= π * 6.25
≈ 19.63 cm^2
Therefore, the area of the hamburger is approximately 19.63 cm^2.