Calculating the Surface Area of Prisms and Cylinders
The surface area of a prism or cylinder is the two bases plus the lateral surface. For a cylinder that lateral part unrolls into a rectangle whose width is the circumference. Worked examples: surface area of prisms and cylinders Practice questions on prism and cylinder surface area Determine the surface area of a rectangular prism […]
How to Calculate the Area of Regular Polygons
The area of a regular polygon is half the apothem times the perimeter. The apothem is the distance from the center to the middle of a side, and that formula works because the polygon splits into identical triangles. Regular Triangle (Equilateral): Area (A = frac{sqrt{3}}{4} times text{side}^2) Regular Quadrilateral (Square): Area (A = text{side}^2) Regular […]
