(a) How many vertices does it have? (b) How many edges (lateral edges plus base edges) does it have?
(c) How many faces (lateral faces plus bases) does it have?

a

step-by-step explanation:

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870

question 1: step-by-step explanation:

1/4 of 84 = 84÷4= 21