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Semi-perimeter means half the perimeter. Calculate the perimeter, then divide that by 2 to get the semi-perimeter.

Q: What is the semi-perimeter of a triangle with side lengths 11 61 and 60?

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If triangle RST equals triangle MNO then RT = MO = 11 units. All the rest of the question - the lengths of RS and ST are irrelevant.

A triangle with side a: 11, side b: 8, and side c: 7 cm has an area of 27.93cm2

A pentagon, which is a 5-sided figure, might have sides that are 11 inches long. But there are an infinite number of other lengths possible. If we are talking about a regular pentagon with a perimeter of 55 inches, then yes, each side of that pentagon is 11 inches long.

If CB is the hypotenuse, then AB measures, √ (62 - 52) = √ 11 = 3.3166 (4dp) If AB is the hypotenuse then it measures, √ (62 + 52) = √ 61 = 7.8102 (4dp)

perimeter is the sum of all side lengths. Since a 9 by 11 has 2 sides 9 inch and 2 sides 11 inch, perimeter is 9+9+11+11 = 40 inches

Related questions

A scalene triangle

yes

yes it is possible.

11, 4, 8

No because the sum of the its 2 smaller sides must be greater than its longest side.

Yes.

Yes and it will be a scalene triangle

It is a scalene triangle

Yes, because 11 + 15 > 21, 11 + 21 > 15, and 15 + 21 > 11

No it is not possible because the sum of the lengths of the two sides has to be greater than the length of the third side. 5 + 4 = 9 which is less than 11, so we can't form a triangle with these sides.

Yes that is possible. To check, you add the two shorter sides, and they should be longer than the longest side.

9, 4, and 11 are three dimensionless numbers. Yes, they can represent the lengths of the sides of a triangle. You can take three straight sticks, cut them to lengths of 9, 4, and 11 inches, then lay them down on a table so that the ends hook up and they form a triangle.