Answer:
x ≥ -12
Step-by-step explanation:
The answer is 20
5 times 4 is 20
V of large = πr^2 h = π 9^2 (15) = 1215π
V of small= πr^2 h = π 4^2 (15) = 240π
V of non-shade = 1215π - 240π = 975 cm^3
We need to apply trigonometry for easy calculations.
Let Z represent the ramp.
sin x = wall divided by the ramp
Let x = 7°.
sin 7° = 2.5/Z
We now solve for Z.
Z = 2.5 ÷ sin 7°
Z = 20.5137726212
We round off to the nearest tenth of a foot. This means to round off to the ones place.
Z = 21 feet
Done.
Answer:
Step-by-step explanation:
(congruent segments subtracted from congruent segments form congruent segments)