Answer:
I don't know
Step-by-step explanation:
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Answer:
B: 13000 m²
Step-by-step explanation:
To find how much wood is used, we will have to find the surface area of the wooden building.
Formula for surface area of a rectangular pyramid is;
SA = lw + l√(h² + w²/4) + w√(h² + l²/4)
We are given;
l = 100 m
w = 50 m
h = 40 m
Thus;
SA = (100 × 50) + 100√(40² + 50²/4) + 50√(40² + 100²/4)
SA = 5000 + 4717 + 3201.56
SA = 12918.56
Approximating to 2 significant figures gives;
SA = 13000 m²
Let x represent the amount of sugar needed to make one batch of cookies.
We have been given that Pia used
of her sugar to make
of a batch of cookies. We are asked to find the amount of sugar needed to make whole batch.
We can represent our given information in an equation as:
![\frac{3}{4}x=\frac{2}{3}](https://tex.z-dn.net/?f=%5Cfrac%7B3%7D%7B4%7Dx%3D%5Cfrac%7B2%7D%7B3%7D)
Let us solve for x.
![\frac{4}{3}\cdot \frac{3}{4}x=\frac{4}{3}\cdot \frac{2}{3}](https://tex.z-dn.net/?f=%5Cfrac%7B4%7D%7B3%7D%5Ccdot%20%5Cfrac%7B3%7D%7B4%7Dx%3D%5Cfrac%7B4%7D%7B3%7D%5Ccdot%20%5Cfrac%7B2%7D%7B3%7D)
![x=\frac{4\cdot 2}{3\cdot 3}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B4%5Ccdot%202%7D%7B3%5Ccdot%203%7D)
![x=\frac{8}{9}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B8%7D%7B9%7D)
Therefore, Pia needs
of her sugar to make 1 whole batch of cookies.
Answer:
|a-c| meters
Step-by-step explanation:
If I am piloting an airplane to prepare for landing, I change the plane's altitude from a meters to c meters, then the expression that represents the distance between two altitudes is given by |a-c| meters, not by |a+c|.
For, example if the altitude of the plane changes from 1000 meters to 500 meters for preparing for landing then the distance between those two altitudes is |1000 - 500| = 500 meters. (Answer)
But using the expression |a+c|, I will get the wrong answer as |1000 + 500| = 1500 meters.