Step-by-step explanation:

As given,
The diameter of one glass bead = 0.4 cm
As the beads are stringed/attached end to end that means a straight line of beads (diameter) can be imagined and adding up all the diameters or multiplying the diameter with total number of beads, we can get the total length of the necklace.
Hence, the length can be found as =
cm
or converting this in meters we get
meter
Hence, the necklace will me 40 meters long.
Answer: I think the answer is 1250.
Step-by-step explanation:
I did 200 divided by 4 which is 50. I then multiplied 50 * 25 and got 1250.
2x+10, multiply to two each term x and 5
3/5 of 40 = 24
1/4 of 40 = 10
24 + 10 = 34