Answer:
Step-by-step explanation:
I used Desmos a graphing calculator to find it by plotting the points. I then found the "a" in the equation to find the "d". I know this doesn't sound helpful so can someone else please explain better than me???
Divide the perimeter by 3 to find the side length.
Since the formula for the are of a triangle is
1/2 * b * h the height must be found.
If a perpendicular line is drawn from the apex of the triangle, a right triangle is formed with a base of 5 and a hypotenuse of 10. Also since it originally was equilateral the base angle is 60 degrees. The rules for finding lengths of sides of equal. Triangles is long leg = sqrt3 * short leg
the height is the long leg so the height is 5sqrt3.
A=(1/2)(10)(5sqrt3)= 25sqrt3
5+5=10 and 15-5=10..........
Area is length times width so
A = 4.5*3.4 which is 15.3.
The area of the rectangle is 15.3 cm