3 years ago

A circle as 75 square centimeters . Which answer is closest of the measure of its radius

Mathematics

1 answer:

olchik [2.2K]3 years ago

4 0

Answer:

≈ 4.89

Step-by-step explanation:

A = πr²

75 = 3.14 x r²

r² = 75 / 3.14 = 23.89

r = 4.89

You might be interested in

Need help with this im confused

Jet001 [13]

Answer:

$-\frac34 -\frac14 i$

Step-by-step explanation:

Let's start with distributing: $\frac1{4i}-\frac{3i}{4i}$ Simplify i with i in the second term, and rearrange. $-\frac34 +\frac1{4i}$ . Since i in the denominator looks ugly, let's multiply top and bottom by i. $-\frac34 +\frac i{4i^2} = -\frac34 +\frac i{4(-1)} =-\frac34 -\frac14 i$ . The middle passage is based on the fact that, by definition, $i^2=-1$