pi x the square of the radius
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If you're talking about a rectangle, it's L times W. For the area of a circle, it's r squared times pi.
im assuming your circle has a diameter of 1/4 inches to find sq in just find the area since the area is the definition of square inches. area = (3.14159) * (.252) = 0.196349375sq in
the definition of rule in math is what step you need to answer a question. what should you do to answer a problem.....you have to follow the rule to able to answer a problem..for example :-to find the area of a circle. you have to follow the formula of the circle . which is A= radius square pi. if u follow the rule your answer will be correct.....
Area of a circle = pi*radius2
Area of a circle = pi*radius2