Answer:
A = 346.185 cm²
Step-by-step explanation:
The formula given is:
A = πr²
A = Area of the object (circle).
π = 3.14
r = radius, which is 1/2 of the diameter, a straight line from one end to the other.
Set the equation, plug in the corresponding numbers to the corresponding variables:
A = (3.14)(10.5)²
Simplify. Remember to follow PEMDAS.
PEMDAS =
Parenthesis
Exponents (& Roots)
Multiplication
Division
Addition
Subtraction
and is the order of operation.
First, solve the exponent.
(10.5)² = 10.5 * 10.5 = 110.25
Next, multiply:
A = (3.14)(110.25)
A = 346.185 cm²
A = 346.185 cm² is your answer.
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In this case or scenario,
the double-angle identity that should be used is the one for cosine. <span>
In totality, we shall need the following three trigonometric
identities to end up with the equality:
<span>1. cos (2a) = cos² (a) - sin² (a)
2. sin² (a) + cos² (a) = 1
<span>3. tan² (a) + 1 = sec²
(a)
<span>Using identities 1 and 2 on the left-hand side of the
equation, we get the following:</span>
1 + cos (2a) = 1 + cos² (a) - sin² (a) = 2 cos² (a) </span></span></span>
<span>
<span>Recalling that cos² (a) = 1 / sec² (a) and applying identity
3, we find the following:</span>
2 cos² (a) = 2 / sec² (a) = 2 / (1 + tan² (a)) </span>
Therefore giving us:
<span>2 cos² (a) = 2 / (1 +
tan² (a))</span>
The answer should be this x=−11(−3−10ac)
Answer:
sorry for points
Step-by-step explanation:
Answer:
55 +20 = 75
then she cuts 15
75-15 = 60
60 cm in milimiters
50*10
600 milimeters is the answer
Step-by-step explanation:
