SOLUTION: The perimeter of an isosceles triangle is 85 centimeters. the ratio of the length of the base to the length of a leg is 5:6. Find the lengths of the three sides. Can someone pleas

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Question 827102: The perimeter of an isosceles triangle is 85 centimeters. the ratio of the length of the base to the length of a leg is 5:6. Find the lengths of the three sides.
Can someone please explain this to me? I just don't understand geometry and my teacher doesn't really like me and won't answer my questions. I try so hard in his class but I have been working on this one problem for 30 minutes. I need desperate help.
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
base:leg is 5:6.

Trying to draw a picture could help. Triangle, two legs equal, the "base" length a little shorter than the leg length (I assume you only mean either leg, not both legs combined).

The factor of the parts of the units of the sides to the perimeter is unknown. Five and six of what would give 85 cm? We need a factor, call it x.

highlight_green%285x%2B6x%2B6x=85%29, perimeter equation, not yet knowing actual size of the sides; only knowing ratio among the sides. You need to be sure you understand all this before you can continue. IF you DO understand, then you can finish the rest of the problem. If you do not yet understand, then you need that help, first.