4is thex the yintercept is -8
Answer:
c = 27.9
B = 62.13°
C = 89.90°
Step-by-step explanation:
We are given the following values:
A= 121.59°, a = 27.9 cm, b = 52.6 cm
a) Finding side c
We would use Pythagoras Theorem
c² = a² + b²
c = √(a² + b²)
c = √(27.9² + 52.6²)
c = 59.54cm
≈ Approximately = 59.5cm
b) Finding B
We would be using Cosine rule to find Angle B
Cos B = a² + b² - c²/2ab
B = arc cos ( a² + c² - b²/2ac)
B = arc cos( 27.9² + 59.5² - 52.6²/ 2 × 27.9 × 59.5)
B = 62.13268°
B = 62.13°
c) Finding C
We would be using Cosine rule to find Angle C
Cos C = a² + b² - c²/2ab
C = arc cos ( a² + b² - c²/2ab)
C = arc cos( 27.9² + 52.6² - 59.5²/ 2 × 27.9 × 52.6)
C = 89.9°
Answer:
Exact Circumference = 3π feet
Approximate Circumference = 9.42 feet
Exact Area = 2.25 π ft²
Approximate Area = 7.07 ft²
Step-by-step explanation:
Diameter = d = 3 feet
Radius = r = 1.5 feet
<u><em>Circumference:</em></u>
Outline of the pit is the circumference.
=> Circumference = 
Where d = 3 feet
=> <u>Exact Circumference = 3π feet</u>
=> <u>Approximate Circumference = 9.42 feet</u>
<u><em>Area:</em></u>
Area of Circle = πr²
Area = π(1.5)²
<u>Exact Area = 2.25 π ft²</u>
<u>Approximate Area = 7.07 ft²</u>
Answer:
<u>It would cost about $2.90</u>
Step-by-step explanation:
<em>You have to first see how much inches are in a foot and divide that by how much it costs.</em>
