exam Maths Puzzle Numerical Ability

An isoceles triangle has a perimeter of 45cm. Its equal sides each measure 6cm longer than the base. How long is the base of the triangle?

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exam Other Question
a picture frame measures 34cm by 17cm. There is a 318cm^2 of picture showing. The frame is uniform thickness. Find the thickness of thr frame. What percent of 65 is 13?