A woman wants to measure the height of a nearby building. She places a 2m pole in the shadow of the building so that the shadow
2 answers:
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Answer:
Step-by-step explanation:
The surface area of a rectangle can be calculated with:
The surface area of a trapezoid can be calculated with:
Calculate the area of the base, wich is a rectangle:
There are two equal rectangles, therefore, multiply the area of any of them by 2:
Calculate the area of the other rectangle:
There are two equal trapezoids, therefore, multiply the area of any of them by 2:
Therefore, the surface area will be the sum of all the areas calculated:
Answer:
Step-by-step explanation:
For the equation use the substitution
Then the equation will take look
Solve this quadratic equation:
Thus,