Question

Darryl's working on another staircase. the volume of the staircase is 34 cubic feet. he poured 3 cubic feet of concrete into the lowest stair and 6 cubic feet into the middle stair. how much concrete does darryl need for the highest stair?

Answer 1

25

Explanation:

You already have 3 and 6 so we going to add that first

( 3+6)=9

So we have 9 and we are going to count on up until you hit 34 which will be 25 so your answer is 25

Answer 2

25 cubic feet of concrete

Explanation:

Given the information:

• the volume of the staircase is 34 cubic
• 3 cubic feet of concrete into the lowest stair
• 6 cubic feet into the middle stair

=>The volume of concrete darryl need for the highest stair is:

The volume of the staircase - the volume of the lowest stair - the volume of middle stair

= 34 - 3 - 6

= 25 cubic feet of concrete

Hope it will find you well.