Answered

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pls help tyyy!!!!!!!!!

Pls Help Tyyy class=

Sagot :

Part A

For this part, I'm assuming your teacher implies that we ignore the door, windows and rectangular opening. It seems like parts B and C cover this aspect.

There are 2 walls that are 20 feet by 10 feet. Each is 20*10 = 200 sq ft, so both opposite walls are 2*200 = 400 sq ft.

Then there are 2 more walls that are 15 ft by 10 ft. Each has area 15*10 = 150 sq ft, and doubles to 2*150 = 300 sq ft.

The total wall area (ignoring any openings/doors/windows/etc) is 400+300 = 700 sq ft.

Another way to get this answer is to find the perimeter of the floor rectangle to get 2(L+W) = 2(20+15) = 2(35) = 70. Then multiply this with the height of the room to get 70*10 = 700

Answer: 700 square feet

Note: This ignores the windows/doors/any other opening

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Part B

Useful info to focus on:

  • Fact1: Along one of the long walls, there are three windows that each measure 3 feet by 8 feet
  • Fact2: Along one of the short walls, there are two windows that each measure 3 feet by 8 feet.
  • Fact3: Along the other long wall, there is a rectangular opening that measures 7 feet by 8 feet.

There's no mention of a door (either front door or interior door to another room). Instead, your teacher talks about a rectangular opening which I'm assuming is the walkway to perhaps the kitchen and/or hallway or something. Though this rectangular opening might be part of or entirely the front door. It's not clear what your teacher means here. I'll just forget about the door part.

Fact1 and fact2 tell us we have 3+2 = 5 windows of 3 ft by 8 ft. Each window has area 3*8 = 24 sq ft. Five of them give 5*24 = 120 sq ft

Fact 3 says we have a rectangular opening of area 7*8 = 56 sq ft.

The total area of all items mentioned is 120+56 = 176 sq ft

Answer: 176 sq ft

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Part C

We subtract the results of the previous parts A and B

wall area to paint = A - B = 700 - 176 = 524 sq ft

We're told that "The cans of paint Kamrie will purchase cover 415 square feet." So we'll divide the total area over the area per can.

524/415 = 1.26265 which is approximate

Round up to the nearest whole number. We don't round down to 1 can because we'll come up short. Instead we round to 2 paint cans. Having extra leftover paint is handy in case Kamrie made a mistake somewhere.

For this entire problem, I'm ignoring the ceiling and focusing on the walls only.

Answers:

wall area to paint = 524 sq ft

number of paint cans needed = 2

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