The walls and ceiling of a hotel room are to be painted. The ceiling is a 20-foot square, and the walls are 8 feet tall. What is the surface area of the walls and ceiling to be painted? Ignore any doors or windows.

960 is answer easy

Step-by-step explanation:

20*8*6 is answer

Step-by-step explanation:

The ceiling is a square of side 20, its area is:

The walls have dimensions of 20x8 and there are 4 walls, their area is:

Total area to be painted is:

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for