3 years ago

The radius of a circular lens of a magnifying glass is 4 centimeters. What is the area in square centimeters of the glass

1 answer:

7 0

You said that the radius is 4cm.

We can use the formula for the area of a circle: π x r²

So π x (4)²

is π x 16

= 16π

= 50.3 cm² (aprox).

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Tema [17]

Answer: $-\dfrac{2\sqrt{14}}{9}$

Step-by-step explanation:

Given

$\cos a=\dfrac{5}{9}$

$a$ lies in the fourth quadrant

So, sine must be negative in the fourth quadrant

Using identity $\sin ^2 x+\cos^2 x=1$ to find sine value

$\Rightarrow \sin^2 a=1-\dfrac{5^2}{9^2}$

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2 years ago

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Veronika [31]

I hope this helps you

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3 years ago

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stellarik [79]

when x = 1, f(1) = 1/3

Answer

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