Mathematics, 09.11.2020 22:10, itsgiovanna

PLEASE HELP WILL MARK BRAINLIEST

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answered: wolfsaway

9514 1404 393

A is smaller

Step-by-step explanation:

The surface area of a cylinder is ...

A = 2πr² +2πrh = 2πr(r+h)

Here, we have r=30 mm, h = 240 mm, so the surface area is ...

A = 2π(30 mm)(30 +240 mm) = 60,200π mm² ≈ 50,894 mm²

The box is 2 diameters square and 1 diameter high. Its surface area is ...

A = 2(LW +H(L+W)) = 2((120 mm)(120 mm) +(60 mm)(120 +120 mm))

A = 2(14400 mm² +14400 mm²) = 57,600 mm²

Comparing the two areas, we conclude that ...

A is smaller

Alternate solution

Since r = d/2, the area of the cylinder is ...

A = 2π(d/2)(d/2 +4d) = 9πd²/2 ≈ 14.14d²

The area of the box is ...

A = 2((2d)(2d) +d(2d +2d)) = d²(2(4 +4)) = 16d²

Then 14.14 < 16, so A is smaller.

answered: Guest

b. x- 48 =120

step-by-step explanation:

Which equation can be solved to find x the measure of jk in the diagram?

answered: Guest

"it's not the heat, it's the humidity". that's a partly valid phrase you may have heard in the summer, but it's actually both. the heat index, also known as the apparent temperature, is what the temperature feels like to the human body when relative humidity is combined with the air temperature. this has important considerations for the human body's comfort. when the body gets too hot, it begins to perspire or sweat to cool itself off. if the perspiration is not able to evaporate, the body cannot regulate its temperature. evaporation is a cooling process. when perspiration is evaporated off the body, it effectively reduces the body's temperature. when the atmospheric moisture content (i.e. relative humidity) is high, the rate of perspiration from the body decreases. in other words, the human body feels warmer in humid conditions. the opposite is true when the relative humidity decreases because the rate of perspiration increases. the body actually feels cooler in arid conditions. there is direct relationship between the air temperature and relative humidity and the heat index, meaning as the air temperature and relative humidity increase (decrease), the heat index increases (decreases).

step-by-step explanation:

75% of the temperatures are below what value? how do you know? 75% of the temperatures are above w

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