Let's find the area of the base.
It's a rectangle that's 3.8 by 4.8, so let's multiply.
3.8×4.8=18.24
We have two different triangles.
Triangle one has a height of 2.6 and base of 4.8. But there are two of them.
2.6×4.8×0.5=6.24×2= 12.48; this is the area of two triangles.
Another set of triangles has a height of 2.9 and a base of 3.8.
2.9×3.8×0.5=5.51×2=11.02
Let's add all the areas together.
18.24+12.48+11.02
41.74
The surface area is 41.74 m², so the third option.
Answer:
Part a)
Given that
Thus the probability that a randomly selected clock lasts for at most 6 years is
Part b)
The probability that a clock lasts between 6 to 9 years equals
f(9)-f(6)
Thus probability becomes 0.818-0.75 = 0.0681
part c )
See attached figure
For shaded region of part a see attached figure
5/6 is greater.
Think of it like it was a pizza.
On one pizza, there were 6 even slices. On the other, there are 8 even slices.
If you wanted more, would you want 5 slices from the first pizza or the second pizza?
No because they both have the same denominator!