Book Maths Puzzle Geometry

The perimeter of a triangle is 60 inches. The second side is 10 inches longer than the first side. The third side is 6 inches more than twice the first side. what is the length of the smallest side?

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Hi,

If a = 4
b = 1188
c=(524+n^2)

What can I tell about the value of n or the values of the quadratic formula.

Chris The base of a triangular prism is an isosceles triangle with an area of 12 inches^2.If the height of the prism is 5 inches, find the surface area.