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To determine the number of triangles with a perimeter of 15cm, we need to consider the possible side lengths that can form a triangle. The triangle inequality theorem states that the sum of the lengths of any two sides of a triangle must be greater than the length of the third side. With a perimeter of 15cm, the possible side lengths could be (5cm, 5cm, 5cm) for an equilateral triangle, (6cm, 5cm, 4cm) for an isosceles triangle, or (7cm, 5cm, 3cm) for a scalene triangle. Therefore, there are 3 possible triangles that can have a perimeter of 15cm.
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How many different triangles are there that have a perimeter of 10?
Infinitely many.
How can you find the answer for the perimeter and area of a rectangle?
find the perimeter and area of a rectangle that is 15cm long and 5cm wide
What is the perimeter of 8cm and 15cm?
Perimeter is the total of all the sides. Let's assume your part-question relates to a rectangle. Four sides: 2 x 8cm and 2 x 15cm. I'm sure you can work it out from there...
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90cm (six sides x 15 = 6 x 15 = 90)
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it depends on what type of measurement you are using
