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How do you work out the area of an equilateral triangle with a perpendicular height of XV inches showing details of your work and giving your final answer to an appropriate degree of accuracy?
Wiki User
∙ 14y ago
Height in inches = XV=15 Area of a triangle = base length times perpendicular height divided by 2 An equilateral triangle has three equal sides with three equal interior angles of 60o An equilateral triangle can be considered as being two right angled triangles joined together. So we can make use of trigonometry to find the base length: opposite/tangent = adjacent length of the right angled triangle 15/tangent 60o = 8.660254038 inches Base length of the equilateral triangle = 8.660254038*2 = 17.32050808 inches Area = 17.32050808*15/2 = 129.9038106 square inches Therefore the area of the equilateral triangle is 130 square inches which is correct to three significant figures. Answered by David Gambell, Merseyside, England.
Wiki User
∙ 14y ago
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How many perpendicular bisectors does an equilateral triangle have?
Equilateral triangles have 3 perpendicular bisectors
Does an equilateral triangle have perpendicular lines?
No
Does a equilateral triangle have a perpendicular side?
No but a right angle triangle does
Could the median of a triangle be the perpendicular bisector?
Yes in equilateral triangle.
How many perpendicular edges does an equilateral triangle have?
None
Does an equilateral triangle have perpendicular sides?
No. a equilateral triangle does not have perpendicular sides.
Does equilateral triangle have perpendicular sides?
No. a equilateral triangle does not have perpendicular sides.
How many perpendicular sides does an equilateral triangle have?
An equilateral triangle doesn't have any perpendicular sides on it.
How many perpendicular bisectors does an equilateral triangle have?
Equilateral triangles have 3 perpendicular bisectors
Does an equilateral triangle have any perpendicular sides?
no a equilateral triangle does not have any perpendicular sides because the lines are joined together.
Does an equilateral triangle have perpendicular diagonals?
no
Does an equilateral triangle have perpendicular lines?
No
Does a equilateral triangle have a perpendicular side?
No but a right angle triangle does
Could the median of a triangle be the perpendicular bisector?
Yes in equilateral triangle.
How many perpendicular edges does an equilateral triangle have?
None
What shape does not have any perpendicular lines?
equilateral triangle
How many perpendicular lines does an equilateral triangle have?
none
