Answer:
Are the pencils side by side or are they 2 x 2?
If they are side by side, then the band like a rectangle
but two of the sides are rounded.
In that case, The length is 10x 4 = 40.
The width is a half circle with diameter 10, which has
a circumference (perimeter) of 1/2*PI*10 = 5 * pi.
The total length of the band is 2*40 + 2*5*pi = 80 + 10*pi
Step-by-step explanation:
