Line segment SU is a diameter of circle V. What is the measure of arc S T?

56°
68°
112°
163° (it is 56!)

112°

Step-by-step explanation:

Angles in a Circle

An inscribed angle is formed between two chords whose vertices lie on the circumference of a circle. The figure shows three chords: TU, SU, and ST. SU happens to also be a diameter because it goes through the center of the circle V.

ST and SU form an inscribed angle of 34°. The corresponding central angle is TVU and its measure is

The required measure of the arc ST is the measure of the angle SVT. Note that SVT and TVU are complementary, thus:

Solving for the measure of SVT:

112°

answer: ok

step-by-step explanation:

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5