Area of equilateral triangle: 0.5*8*8*sin(60 degrees) = 27.7 square inches rounded
21.2 sq inches.
It is: 0.5*4*4*sin(60 degrees) = 7 square cm rounded to nearest integer
It works out as 22.335 feet rounded to three decimal places
It is: 0.5*7.5 square*(sin 60 degrees) = 24.357 square cm rounded up to 3 d.p.
For an equilateral triangle with side length a, area = (a²√3)/4, which for a= 6cm is 15.6 cm² [rounded to 1 decimal place]
Perimeter of equilateral triangle: 24 units Area of equilateral triangle: 27.713 square units rounded to three decimal places
21.2 sq inches.
14.00
It is: 0.5*4*4*sin(60 degrees) = 7 square cm rounded to nearest integer
Each side is: 16.65/3 = 5.55 cm Area is: 0.5*5.55*5.55*sin(60 degrees) = 13.34 square cm rounded
1.00
It works out as 22.335 feet rounded to three decimal places
Using the sine rule in trigonometry the perimeter of the triangle works out as 382cm rounded to the nearest integer
1.00
Area = 0.5*7.52*sin(60 degrees) = 24.357 square cm rounded to 3 dp.
13.00
It is: 0.5*7.5 square*(sin 60 degrees) = 24.357 square cm rounded up to 3 d.p.