d₁ = -16t² + 122t
d₂ = -16t² + 84t
d = d₁ - d₂
d = -16t² + 122t - (-16t² + 84t)
d = 38t
After five seconds, t=5,
d = 38(5) = 190
Answer: 190 feet
Answer:
°
°
°
°
°
°
Step-by-step explanation:
The triangles are drawn below.
Since, CD is the height to AB, therefore, CD is perpendicular to AB.
Therefore, angles °
Also, is same as .
Therefore, °
Now, triangles ΔCBD and ΔCAD are right angled triangles.
So, for the right angled triangle ΔCAD,
Now, from the figure,
From ,
Hence, all the angles of the triangles ΔCBD and ΔCAD are:
°
°
°
°
°
°
Area of circle = πr² = 3.14×4² = 50.24m²
The best approximation is C.
Answer:
3.785 litres
Step-by-step explanation: