klrm8045
27.07.2019 •
Mathematics
Amanda wants to paint the walls of a room. she knows that each can of paint contains one gallon. a half gallon will cover a 55 square feet of wall. each of the four walls is 10 feet high. two of the walls are 10 feet wide and two of the walls are 15 feet wide. how many 1-gallon buckets of paint does amanda need to buy in order to fully paint the room?
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Ответ:
2nd type - b
a = 10*10 = 100ft²
b = 15*10 = 150ft²
The total area is 2a + 2b
2*100 + 2*150 = 500ft²
500/110 = 4.55
The answer needs to be a whole number and she needs to have enough paint so the answer is 5 buckets
Ответ:
Step-by-step explanation:
For this item, all we have to identify is the area of the hanging light cover. Because it is said that it does not have a cover, we are only concerned about the lateral area which is equal to
Lateral area = 4(x)(l)/2 = 2xl
where x is the measure of the side of the square base and l is the length of the slant height.
After calculating the area in square foot, we multiply this to 2.45 pounds/ft², if the obtained value is ≤ 35 then, the chain can support the light cover.