Help me solve these 1 what is the circumfrence of a circle that has a diameter of 18 cm
2what is the circumfrence of a circle that has radius of 5 cm
3what is the circumfrence of a circle with radius of 6 cm
4what is the area of a circle with a diameter of 10 cm
5what is the area of a circle with the radius of 20 cm
6what is the are of a circle with a radius of 8 cm

Two sides of a right triangle measure 2 units and 4 units. what is the area of the square that shares a side with the third side of the triangle?

Atriangle has side lengths of x, x+11, and 3x+5. what is the perimeter? a. 3x^2 + 38x + 55 b. 4x + 16 c. 5x + 16 d. 3x^3 + 38x^2 + 55x

Aresearcher believes increased perceived control influence the well-being of residents at a nursing home. to test this , she allowed one group of residents to have control over their daily lies, (where to eat etc) . the other group of 5 residents had these deceisions made by staff. the resident's feelings of well-being were measured on a 10 point scale at the end of a one month trial period. is there a difference on well-being?