1. You record the amounts of time you practice the piano each day for 10 days. Your friend practices the same total amount of time but for an equal number
of hours each day. How long does your friend practice each day?
Piano Practice
Answer here:
XXX XENZ
XX
X
O
1 2
1
Time (hours)
You friend practices
hours) each day

Answer: d. 39 cmin the diagram, the approximate length of the minor arc de is 39 centimetres.step-by-step explanation: the formula for the length of an arc in a circle is as displayed below.let the length of the minor arc de = xx = 2( pi )r × angle of sector / 360°from this, we will substitute the values given from the problem into the formula to obtain the length of the minor arc de.x = 2( pi )r × angle of sector / 360°r = radius = 25cmpi as an approximate value = 3.14angle of sector = 120°x = 2( 3.14 )( 25 ) × 120° / 360°x = 157 × 1 / 4x = 39.25x = 39 ( rounded to the nearest whole number as an approximate value )