Find the length of the arc, which is 5/9 of a circle whose radius is 36 cm.
| December 2, 2020 | education
The diagonal of the trapezoid ABCD divides it into two right-angled isosceles triangles find the midline of the trapezoid if the perimeter of the triangle ACD is 144 cm2
Find the length of this circle by the formula C = 2 * п * R
C = 2 * п * 36 = 72п
Find 5/9 of this length:
5C / 9 = 5 * 72п/ 9 = 5 * 8п = 40 * п = 40 * 3.14
Answer: 40 п
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