volume_mute
Find the Base – Isosceles Triangle Perimeter
publish date: 2026/05/16 20:57:5.095063 UTC
volume_mute
The perimeter of an isosceles triangle is 58 meters. One of its two sides of equal length is 15 meters long. How long is its base?
Correct Answer
28 m
Explanation
Let \(b\) = length of the base:
\[b + 15 + 15 = 58\]\[b + 30 = 58\]\[b = 28\]
The base is 28 meters. Check: \(28 + 15 + 15 = 58\) ✓
Reference
Mathematics for college students