Mathematics

Mathematics

Problem

For the ellipse x225+y29=1\dfrac{x^{2}}{25}+\dfrac{y^{2}}{9}=1, what is the length of its major axis? a) 66 b) 88 c) 1010 d) 55
Intuitive explanation

The major axis is the longest diameter of an ellipse, and its length is determined by the larger of the two denominators in standard form. Here, compare 25 and 9 to identify which semi-axis is longer, then double that value to get the full major axis length.

Intuitive explanation

The major axis is the longest diameter of an ellipse, and its length is determined by the larger of the two denominators in standard form. Here, compare 25 and 9 to identify which semi-axis is longer, then double that value to get the full major axis length.

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