An arc of a circle subtends an angle of 150° at the circumference of the circle calculate the angle subtended by
the same arc at the centre of the circle ​

When a whole number is multiplied by 104, how does the placement of the decimal point change? a. it moves ten places to the right. b. it moves four places to the left. c. it moves ten places to the left. d. it moves four places to the right.