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Stadium Calculator

Choose a Calculation: Given r and a find A and P Given r and A find a and P Given r and P find a and A Given a and P find r and A r =    a =  Units:     meters feet inches     A =  P =

r = radius a = length side a A = area P = perimeter Π = Pi

Stadium Formulas in terms of radius r and side a: (Π = Pi)

Area of a stadium:

A = Π * r² + 2 * r * a

Perimeter of a stadium:

P = 2 * (Π * r + a)

Stadium Calculations:

Use the following additional formulas along with the formulas above.

• Given the radius and side of a stadium calculate the area and perimeter
  Given r, a find A, P
  • use the formulas above
• Given the radius and area of a stadium calculate the side and perimeter
  Given r, A find a, P
  • a = (A - (Π * r²)) / (2 * r)
• Given the radius and perimeter of a stadium calculate the side and area
  Given r, P find a, A
  • a = (P / 2) - (Π * r)
• Given the side and perimeter of a stadium calculate the radius and area
  Given a, P find r, A
  • r = (P / 2Π) - (a / Π)