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Geometry

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Find the area

A polygon with 7 sides

How many degrees are in the sum of an interior angle and an exterior angle of a regular polygon

Find the area of an equilateral triangle that has a perimeter of 21 inches Round the answer to one decimal place

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Q: Find the area of an equilateral triangle has a perimeter of 21 inches round the answer to one decimal place?
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Find the area of an equilateral triangle that has a perimeter of 21 inches Round the answer to one decimal place?

Find the area of an equilateral triangle that has a perimeter of 21 inches. Round the answer to one decimal place.


An equilateral triangle has a perimeter of 27 inches What is the length of each side?

9 inches


Carey drew an equilateral triangle with a perimeter of 45 inches. He dilated the triangle by a scale factor of 0.6. What is the length of each side of the image of the dilated triangle?

Ok if the triangle is equilateral then all the sides have to have the same length. Since the perimeter is 45 inches that means each side is 15 inches. 45 / 3 = 15 Now if he dilates the triangle by a scale factor of 0.6 we have to multiply the length of each side by 0.6. 15 * 0.6 = 9 So the answer is 9 inches


What is the area of an equilateral triangle with sides of 10 inches and 7 inches?

By definition, an equilateral triangle has all three sides of equal length! So it is impossible for it to have sides of length 10 inches and 7 inches!


The perimeter of an equilateral triangle is 90 inches If a pentagon were constructed with each side being 2 inches longer than each side of the triangle how many inches would the total perimeter of?

Solve the problem in stages:Solve for the length of the triangle side.Perimeter = sum of all the sides. As equilateral, all sides equal so 3 x side_length = 90 inside_length = 90in / 3 = 30in.Pentagon side is triangle_side + 2in, thus Pentagon_side = 30in + 2in = 32inThere are 5 sides to a pentagon, each 32in long, so its perimeter is 5 x 32in = 160in.

Related questions

Find the area of an equilateral triangle that has a perimeter of 21 inches Round the answer to one decimal place?

Find the area of an equilateral triangle that has a perimeter of 21 inches. Round the answer to one decimal place.


What is the area of an equilateral triangle that has a perimeter of 21 inches rounded to one decimal place?

21.2 sq inches.


Find the area of an equilateral triangle that has a perimeter of 21 inches. round the answer to one decimal?

Area of equilateral triangle: 0.5*7*7*sin(60 degrees) = 21.2 square inches


What is the perimeter of a triangle which sides measure 6 inches?

18 inches and it is an equilateral triangle


What is the perimeter of an equilateral triangle with a side of 2 inches?

6in.


What is the area of an equilateral triangle that has a perimeter of 21 inches?

21.20


What is the Side length of an equilateral triangle with perimeter of 36 inches?

12 inches


What is the perimeter of an equilateral triangle that had a base side of the 5inches?

The perimeter is the sum of all sides. An equilateral triangle has three sides of equal length. So if one side is 5 inches, and we have three of these, we get a perimeter of 15 inches.


The perimeter of an equilateral triangle is 7.5 inches What is the length of one side?

2.5 inches


An equilateral triangle has a perimeter of 27 inches What is the length of each side?

9 inches


What is the length each side of an equilateral triangle that has a perimeter of 18 inches?

6 inches


What is the perimeter of an equilateral triangle with sides that are 9 inches long?

It is: 3*9 = 27 inches

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