What is the question ?
I can think of three possibilities:
#1). What is the name of this shape ? . . . . . Heptagon.
#2). What is the perimeter of this heptagon ? . . . . . 94 cm
#3). What is the area of this heptagon ? . . . . . Very tough. You'd have to
draw it on graph paper and count up all the little boxes.
0.13m is equal to 13cm. So between the 12cm and the 14cm segments :)
Well, assuming it doesn't have any other sides, it's a scalene triangle.
We don't know whether the 15cm happens to be the hypotenuse (longest side) of the right triangle. It makes a big difference. -- If the 15cm is the longest side, then the third side is 7.483 cm. (rounded) -- If the 13cm and the 15cm are the "legs", then the hypotenuse is 19.849 cm. (rounded)
Using Pythagoras' theorem: 15 times the square root of 2 cm in length
sqrt(15) = 3.873 cm (approx)
0.13m is equal to 13cm. So between the 12cm and the 14cm segments :)
Well, assuming it doesn't have any other sides, it's a scalene triangle.
It depends on how youre measuring him in his centaur form he is roughly 15cm tall and 13cm long
We don't know whether the 15cm happens to be the hypotenuse (longest side) of the right triangle. It makes a big difference. -- If the 15cm is the longest side, then the third side is 7.483 cm. (rounded) -- If the 13cm and the 15cm are the "legs", then the hypotenuse is 19.849 cm. (rounded)
Let x be the length of one of the congruent sides, then the three sides are x, x, 3x. Perimeter = x + x + 3x = 5x = 75cm => x = 15cm Thus the three sides are 15cm, 15cm, 45cm.
Isosceles
60 cm2
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...
Using Pythagoras' theorem: 15 times the square root of 2 cm in length
Perimeter = 8*15 = 120 cm
sqrt(15) = 3.873 cm (approx)
Basically, the perimeter of a shape is the total legnth of all it's sides, therefore to write an expression for it, you need to get the legnths of the sides (even if there is a letter (eg: n)), then put them into an expression. For instance: A polygon has 2 sides that are 15cm long, 1 side that is 22cm long, 4 sides that are n long and 3 sides that are a long. To write the expression for the perimeter of this polygon as basically as possible, you would write: 15cm + 15cm + 22cm + n + n + n + n + a + a + a Now you need to simplify it: 52cm + 4n + 3a If you were asked this question, you would write 52cm + 4n + 3a as your answer. That is an expression for the perimeter of that particular polygon. If you apply the same theory to any question like the one you asked about, you would get it right.