The advertised size of a pizza is the length of its diameter. What is the area of the curst of a 16-ince pizza?
A = pi * r^2
A = 3.14 * 8^2
A = ?
To find the area of the crust of a pizza, we need to calculate the area of the entire pizza and then subtract the area of the inner circle.
1. Find the radius of the pizza: The diameter is given as 16 inches, so the radius is half of that, which is 8 inches.
2. Find the area of the entire pizza: The formula to find the area of a circle is A = πr^2, where A represents the area and r represents the radius. Plugging in the value, we get A = π * 8^2 = 64π square inches.
3. Find the area of the inner circle: Since the crust is only the outer edge of the pizza, we need to calculate the area of the inner circle. The inner circle has a radius of 8 inches (same as the radius of the pizza) because the advertised size of a pizza is the length of its diameter.
4. Calculate the area of the inner circle: Using the same formula as above, A = π * 8^2 = 64π square inches.
5. Subtract the area of the inner circle from the area of the entire pizza to get the area of the crust: 64π - 64π = 0 square inches.
So, the area of the crust of a 16-inch pizza is 0 square inches.
To find the area of the crust of a 16-inch pizza, we first need to determine the radius of the pizza. The radius is half the diameter, so for a 16-inch pizza, the radius would be 16 inches divided by 2, which is 8 inches.
The formula to calculate the area of a circle is A = πr^2, where A represents the area and r represents the radius. π is a mathematical constant that is approximately equal to 3.14159.
So, to find the area of the crust, we substitute the radius value into the formula:
A = π * (8 inches)^2
A = π * 64 square inches
Now, to get the numerical value of the area, we need to multiply π by 64:
A ≈ 3.14159 * 64 square inches
A ≈ 201.06176 square inches
Therefore, the area of the crust of a 16-inch pizza is approximately 201.06 square inches.