Answer:
c. 6 units
Step-by-step explanation:
The diameter of a circle with a circumference of 18.84956 is 6 units.
Use the formula: C=2πr
d=C
π=18.85
π≈6
Answer:
<em>The height of the building is 21.38 m</em>
Step-by-step explanation:
<u>Trigonometric Ratios</u>
The ratios of the sides of a right triangle are called trigonometric ratios.
The image attached shows the measures and angles provided in the problem. The first angle of elevation is y=22°, the man walks B=20 m and finds the new angle of elevation is x=33°.
It's required to find the height of the building H.
The tangent ratio relates the opposite side with the adjacent side of a given angle. Applying it to the larger triangle:
Multiplying by D+B:
Dividing by tan 22°
Subtracting B:
Applying to the smaller triangle:
Multiplying by D:
Substituting from [1]:
Substituting values:
Operating:
H = 21.38 m
The height of the building is 21.38 m
The answer to this question is -8
Answer=26
65students
40%=0.40
65*0.40=26
26 students bought Einstein shirts.