Question

Find the perimeter of an ellipse if the major axis is 30 millimeters (mm) and the minor axis is 12 mm. Round off your answer to the nearest whole number A. 49 mm B.72 mm C. 28 mm D. 283 mm

Answer 1

The perimeter of an ellipse is given by:
 P = (2 * pi) * root ((a ^ 2 + b ^ 2) / 2)
 Where,
 a: semi-major axis
 b: Semi-minor axis
 Substituting the values we have:
 P = (2 * 3.14) * root (((30/2) ^ 2 + (12/2) ^ 2) / 2)
 P = 71.74058266
 Round off to the nearest whole number
 P = 72 mm
 Answer:
 B.72 mm