Tire a bycicle tire has a radius of 15 inches. What is the circumference of the tire? Round to the nearest tenth.

Step-by-step explanation:

2× pie r

2 × pie × r = c

2× 3.14 × 15= 94.2 in

∠acb = 8°

step-by-step explanation:

∠xba lies on the circle and is half the measure of the intercepted arc ax

hence

measure of arc ax = 2 × 42° = 84°

∠acb is outside the circle and is

∠acb = (arcab - arcax ), hence

∠acb = 0.5 (100 - 84) = 0.5 × 16° = 8°

b is 38 degrees.

a is 52 degrees.

this is because if b is 38 and a is 14 degrees more than b than 38+14=52 and 52+38=90 degrees. hope this .