The difference of two number is 1. Their sum is 11. Find the numbers

Step-by-step explanation:

a - first number (the smaller one)

b - second (the larger one)

The difference of two number is 1, so:  

b - a = 1    ⇒  b = a + 1

Their sum is 11, so:

a + b = 11

a + (a + 1) = 11

a + a + 1 -1 = 11 -1

2a  = 10    ⇒   a = 5

b = a + 1 = 5 + 1 = 6

dont understand

step-by-step explanation:

this is answer of 144 cubic meters