Q. Find the radius of circle whose area is 616cm2.
Area Formula: The area of a circle is given by the formula A=πr2, where A is the area and r is the radius. We are given the area A=616cm2, and we need to find the radius r.
Rearrange Formula: To find the radius, we rearrange the formula to solve for r: r=πA. We substitute A=616cm2 into the formula.
Calculate Radius: Now we calculate the radius: r=(π616). We use the approximate value of π, which is 3.14159.
Final Result: Performing the calculation gives us r=3.14159616≈196.03477≈14 cm (rounded to the nearest whole number for simplicity).