Area of circle = pie x (r squared) = πr^2
r = radius
π = pie = 22/7 or 3.142
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That is the formula for calculating the area of a circle with a 10 unit radius. The answer is 314 sq units.
The formula to calculate the area of a circle is A = πr^2, where A is the area and r is the radius. Given that the radius is 13, we can substitute this value into the formula: A = π(13)^2. Calculating this, we get A = 169π, which is approximately 530.93 square units.
The formula for double the area of a circle
The formula for calculating the volume of a hexagonal prism is to take the area of the hexagon, then multiply it by the height of the prism.
The answer will depend on what information you have.