Answer:
8
Step-by-step explanation:
A is 180 degrees, B is 180 degrees, C is definition of complementary angle, D is 180-angle 2, and E is angle 3.
Answer:
2.02 m
or 2 m 2 cm
Step-by-step explanation:
Imagine a triangle containing the 40° angle and that this angle is at the left. Then the height of the truck bed is 1.3 m and the "shortest possible length of the ramp" is the hypotenuse of this triangle. We need to find the length of this ramp, that is, the length of the hypotenuse.
The sine function relates this 40° angle and the 1.3 m height of the truck bed:
sin 40° = opp / hyp = 1.3 m / hyp
which can be solved for 'hyp' as follows:
1.3 m
hyp = ----------------- = (1.3 m) / 0.6428)
sin 40°
1.3 m
Thus, the length of the ramp must be less than -------------- or 2.02 m
0.6428
where this last result is to the nearest cm.
If the ramp is shorter the angle of the ramp will be smaller and the ramp angle considered safer.
Answer:
Step-by-step explanation:
step 1
Find the surface area of the cylinder
The surface area of the cylinder is equal to
we have
----> the radius is half the diameter
assume
substitute
<em>Find the cost</em>
step 2
Find the surface area of the square prism
The surface area of the prism is equal to
we have
substitute
<em>Find the cost</em>
step 3
Find the difference of costs
Answer:
14 units
Step-by-step explanation:
