ON USATESTPREP PLSS HELP AND QUICKLY

If the cube shown is 1 centimeter on all sides, what is the length of the diagonal, x, of the cube? (rounded to the nearest tenth) A) 1.5 cm B) 1.7 cm C) 1.9 cm D) 2.2 cm

Acentral angle measuring 160 degrees intercepts an arc in a circle whose radius is 4. what is the length of the arc the circle formed by this central angle? round the length of the arc to the nearest hundredth of a unit. a) 4.19 units b) 6.28 units c) 12.57 units d) 12.57 square units