Answer:
4.67 ft
Step-by-step explanation:
An arc is simply a portion of the circumference of a circle.
To find the length of an arc, we simply need to apply the formula:
where α = angle subtended by the arc = 
rads = 
degrees = 38.2°
r = radius of the circle = 7 ft
Hence, the length of the arc is:
The length of the arc is 4.67 ft
The best method i found is guess-and-check. Just guess the three numbers. If you do this you should get 6+8+10.
11
(9, 18, 27, 36, 45, 54, 63, 72, 81, 90 and 99)
Those numbers divisible by 9 are the multiple of 9; thus need to know how many multiples of 9 there are between 1 and 100:
100 ÷ 9 = 11 r 1 ÷ last multiple of 9 is 11 × 9 (= 99)
→ There are 11 - 1 + 1 = 11 numbers between 1 and 100 which are divisible by 9.
(They are 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99.)
YES if you simplify 15:10 by 5 since they can both be divided by 5 the ratio becomes 3:2
