Answer:x=4√6
Step-by-step explanation:
In ∆DCB, cos30°=BC/DB
√3/2*16=BC
BC=8√3
Applying PYTHAGORAS THEOREM in ∆BAC,
(8√3)^2=2x^2
x=4√6
Answer:
78.54
Step-by-step explanation:
Area of a circle = pi time radius power of 2
A = pi*r^2
A = 3.14 * 5^2
A = 3.14 * 25
A = 78.54
I believe the correct answer is B
Answer:
x = 5
Step-by-step explanation:
Angles in a triangle add up to equal 180
Hence, 10x - 1 + 78 + 53 = 180
( Note that we just created an equation that we can use to solve for x )
We now solve for x using the equation we created
10x - 1 + 78 + 53 = 180
Combine like terms
10x + 130 = 180
Subtract 130 from both sides
10x = 50
Divide both sides by 10
x = 5
I’m not sure i’m pretty sure it’s 28