Afurniture shop refinishes chairs. employees use one of two methods to refinish each chair. method i takes 0.5

0.5

hours and the material costs $9

$

⁢

9

. method ii takes 2.5

2.5

hours, and the material costs $7

$

⁢

7

. next week, they plan to spend 199

199

hours in labor and $1226

$

⁢

1226

in material for refinishing chairs. how many chairs should they plan to refinish with each method?

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 )