Hi, I do not understand this plz do a step by step explaintion to help me understand

There are two groups;

green and blue+white

Step-by-step explanation:

green=3

blue=3

white=1

total=green/blue*green/blue+white

      =3/3*3/4

A. 1/2 × 6/7

Step-by-step explanation:

According to the image, there are 7 squares in the whole:

3 dark green, 3 light green and 1 white

The green squares represent:

6 × 1/7 = 6/7 of the squares

Dark green is the half of all green, so their number is:

1/2 × 6/7 = 3/7

Correct choice is A

Volume is length times width times height so
20 times 8 times 30 which is 4,800
surface area is ph (p is perimeter of base), h is height.
so perimeter would be length+length+width+width so 20+20+8+8 which is 56. so multiply 56 times 30 which is 1680. hope this !