What is the area of a circle that has a diameter of 9 meters

14.13 sq meters

28.26 sq meters

254.34 sq meters

63.585 sq meters

You find the area of a circle with this equation: A = π r^2

The radius is half the diameter of 9, meaning it's 4.5. The equation becomes:

A = π 4.5^2

Evaluate to get roughly 63.585. So, your answer should be your last choice of 63.585 sq meters. 

Hope this helped!! xx

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the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.