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If you know only the base and height, you have two unknown sides and it is not possible to calculate the perimeter. The perimeter can have any value greater than or equal to 5+sqrt(89) cm.

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Q: What is the formula to calculate the perimeter of a triangle with b equals 5cm h equals 4cm and an unknown side?
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How will you find the height of a triangle?

You will use what you know about the triangle, including the size of sides or angles of that specific triangle, plus properties of any special category of triangles of which it is a member, to calculate the unknown height.


What is a perimeter 5 8 plus unknown number equals what?

If a perimeter of 8 is obtained by adding 5 and unknown number, then the unknown number is 3.2.


How do you calculate the perimeter of a right angle triangle with one unknown side?

Use the Pythagorean Theorem to determine the missing side. That is, if the sides are A, B, and C, C being the longest, then A2 + B2= C2. So if the long side is missing, side A is 3, and side B is 4, then 3 squared is 9 and 4 squared is 16. 9+16=25. The square root of 25 is 5, the length of the missing side of THAT triangle. Add all three sides together to get the perimeter.


How do you find the perimeter of a triangle if you know the base and height?

Assuming the triangle is a right-angle triangle you could follow the following equation: a2 (Base) + b2 (Height) = c2 (Unknown Side) Then you square root the Unknown Side's answer. (Squareroot equals a number multiplied by itself to reach your original number) E.g. 22 + 42 = C2 4 + 16 = 202 Sqaure Root of 20 = 4.472136 or 4.47 (Rounded off to 2 decimal places) Therefore the perimeter of the triangle is 2 + 4 + 4.47 = 10.47 (cm, m km - whatever unit you are using)


How do you find the unknown length of a triangle?

If two sides are given and you need to know the length of the third side use the Pythagrean Theorem formula. Then you find the square root. c² = a² + b²* * * * *That is useful only if the triangle is a right angled triangle. Most are not. The correct answer depends on what information you do have.

Related questions

How do you find the unknown length of one side of a triangle when you know the perimeter and the length of the other two sides?

subtract the two sides that you know from the perimeter to get the unknown side.


How do you find the perimeter of a right triangle when the length of one side is unknown?

You begin by finding the length of the unknown side. The square of the hypotenuse is equal to the sum of the squares of the two legs. Then once you have the lengths of all 3 sides, you adum all up, and you have the perimeter.


How will you find the height of a triangle?

You will use what you know about the triangle, including the size of sides or angles of that specific triangle, plus properties of any special category of triangles of which it is a member, to calculate the unknown height.


What is a perimeter 5 8 plus unknown number equals what?

If a perimeter of 8 is obtained by adding 5 and unknown number, then the unknown number is 3.2.


How do you calculate the perimeter of a right angle triangle with one unknown side?

Use the Pythagorean Theorem to determine the missing side. That is, if the sides are A, B, and C, C being the longest, then A2 + B2= C2. So if the long side is missing, side A is 3, and side B is 4, then 3 squared is 9 and 4 squared is 16. 9+16=25. The square root of 25 is 5, the length of the missing side of THAT triangle. Add all three sides together to get the perimeter.


How do you find the perimeter of a triangle if you know the base and height?

Assuming the triangle is a right-angle triangle you could follow the following equation: a2 (Base) + b2 (Height) = c2 (Unknown Side) Then you square root the Unknown Side's answer. (Squareroot equals a number multiplied by itself to reach your original number) E.g. 22 + 42 = C2 4 + 16 = 202 Sqaure Root of 20 = 4.472136 or 4.47 (Rounded off to 2 decimal places) Therefore the perimeter of the triangle is 2 + 4 + 4.47 = 10.47 (cm, m km - whatever unit you are using)


How is trigonometry used in land surveying?

Trigonometry is basically formula's to help you find out unknown sides and angles of a triangle. Surveying is measuring land. But as not all land is equal so these formula's are used to help.


How do the properties of an isosceles triangle an equilateral triangle and a right triangle how you find the measure of unknown angles?

It works out as: 180 minus the 2 known angles = unknown angle


What is history of theodolite?

From geometry, we know that it is possible to calculate unknown lengths and angles of a triangle given particular information regarding the other angles and lengths of the sides of a triangle. For example, given beginning coordinates such as (x,y) in plane coordinates or the latitude and longitude, it is then possible to calculate new coordinates by measuring certain angles and distances (lengths of sides of a triangle).


How do you find the unknown length of a triangle?

If two sides are given and you need to know the length of the third side use the Pythagrean Theorem formula. Then you find the square root. c² = a² + b²* * * * *That is useful only if the triangle is a right angled triangle. Most are not. The correct answer depends on what information you do have.


How do you find the two unknown lengths of triangle when you know the perimeter and the length of one of the sides?

From that information, you can't. All you know is their sum, but you can't tell their individual lengths. There are actually an infinite number of different possibilities that all work.


What is the unknown side of the right triangle?

It has to be 45 degrees.