Answer:
it's 20
Step-by-step explanation:
I just had the same question and I got it right it's 20.
It opens downwards so it looks like this “n”. That is because a in the formula is a negative number in this situation
Find the volume of the pyramid + the volume of the cube = your answer
Answer:
The scale factor for a model is 5 cm = 16.05 cm.
Step-by-step explanation:
Given:
Model: 9.5cm Actual : 30.5m and the scale factor for model is 5 cm.
Now, we need to find the actual shape for the scale factor 5 cm.
<em>Let the actual shape be
.</em>
Now, for getting the actual shape we set for proportion:
5:x :: 9.5:30.5
5:x = 9.5:30.5
Then, convert it into fractions:

Now, <em>on cross multiplying we get:</em>

Dividing both sides by 9.5 we get:

Therefore, the scale factor for a model is 5 cm = 16.05 cm.