Answer:
9.2 cm.
Step-by-step explanation:
A pyramid has a horizontal square base of 12 cm. The vertex of the pyramid is 7 cm vertically above the base.
So, the height of the pyramid is 7 cm and half-length i.e. half base is equal to cm.
Now, the slant height of a pyramid is the altitude of the side triangles.
Therefore, the length of the slant height will be equal to cm ≈ 9.2 cm. (Answer)
At the end of three days, % of the original amount of liquid remains in Kyle's container .
<u>Step-by-step explanation:</u>
Here we have , Every day 10% of the liquid present in the morning in Kyle's open container will evaporate. At the end of three days, We need to find what percent of the original amount of liquid remains in Kyle's container . Let's find out:
Let's suppose initially we have 100% of liquid present so ,
<u>At day 1:</u>
10% of the liquid present(100%) in the morning in Kyle's open container will evaporate , So left is :
⇒
⇒
⇒ %
<u>At day 2:</u>
10% of the liquid present(90%) in the morning in Kyle's open container will evaporate , So left is :
⇒
⇒
⇒ %
<u>At day 3:</u>
10% of the liquid present(81%) in the morning in Kyle's open container will evaporate , So left is :
⇒
⇒
⇒ %
Therefore , At the end of three days, % of the original amount of liquid remains in Kyle's container .