In 2007, 13% of children living in the u. s. lived in families receiving food stamps. in 2014, 22% of children did. find the average rate of change from 2007 to 2014 in the percent of children receiving food stamps. round to the nearest tenth of a percent.

I'm not sure but i think it's 1670km/h

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 !