Which side lengths could be the sides of a triangle? * A. 11.4, 11.4, 22.8 B. 21, 29, 39 C. 7, 9, 18 D. 3, 9, 16

B

Step-by-step explanation:

Here, we want to choose out of the options the one that represents the values of the sides of a triangle

The important thing to note here is like a law that would help us resolve this.

The rule is that the length of the two other sides must add up to be greater than the third side

With this, we shall be shopping for answers;

According to the law, the only answer is B

It is only in B that the sum of the length of two of the sides is greater than the third

395.84

step-by-step explanation:

2πrh+2πr²

2 (pie)(radius)(height)+2(pie)(radius)^2

"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: