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3 mathematical formulas including pi?
Area of a circle: pi*radius^2 Circumference of a circle: 2*pi*radius or diameter*pi Surface area of a sphere: 4*pi*radius^2
What is the radius of a circle if the surface area is 2500 square centimeters?
To find the radius of a circle when given the surface area, you can use the formula for the area of a circle: A = πr^2, where A is the surface area and r is the radius. Given that the surface area is 2500 square centimeters, you can plug this value into the formula and solve for the radius. 2500 = πr^2 r^2 = 2500/π r ≈ √(2500/π) r ≈ √(795.77) r ≈ 28.2 cm Therefore, the radius of the circle is approximately 28.2 centimeters.
How does the dimensions of a cylinder help you to find its surface area?
Total Surface Area of Cylinder = 2 x pi x radius x (radius + height)Surface area of base circle = pi x radius x radiusSurface area of curved part = 2 x pi x radius x heightHence, total surface area = (2 x area of base circle) + (area of curved part)= (2 x pi x radius x radius) + (2 x pi x radius x height)= 2 x pi x radius x (radius + height)
How do you get a area from the diameter?
The equation for the surface area of a circle is Pi times the radius squared. Pi x r^2 = Area of a circle The radius is 1/2 the diameter therefore if d is the diameter; Pi x (d/2)^2 = Area of a circle
How do you find the surface area of a circleo o-xddddddd-o o-xddddddddddd?
The surface area of a circle can be found using the formula A = πr^2, where A is the area and r is the radius of the circle. Simply square the radius and multiply it by π to calculate the surface area.
