The diameter of a cookie is 2 inches. If \piπ = 3.14, what is the area of the cookie, rounded to the nearest tenth?
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To find the area of the cookie, we need to first find the radius of the cookie.
The radius of a circle is equal to half of its diameter. Given that the diameter of the cookie is 2 inches, the radius will be 2/2 = 1 inch.
Now that we have the radius, we can calculate the area of the cookie using the formula for the area of a circle: A = πr^2.
Given that π = 3.14 and the radius is 1 inch, the area of the cookie is A = 3.14(1^2) = 3.14 square inches.
Rounding to the nearest tenth, the area of the cookie is approximately 3.1 square inches.
To find the area of a circle, you can use the formula A = πr², where A represents the area and r represents the radius.
Since you are given the diameter, you can calculate the radius by dividing the diameter by 2. In this case, the diameter is 2 inches, so the radius would be 2/2 = 1 inch.
Now we can substitute the radius value into the formula: A = π(1)² = 3.14(1)² = 3.14.
Therefore, the area of the cookie is approximately 3.1 square inches when rounded to the nearest tenth.
D = 2r
Area = 3.14 r^2
Work it from there.