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pickupchik [31]

3 years ago

8

Help me PLEASEEEEEEEEEEEEE

1 answer:

Stella [2.4K]3 years ago

5 0

120 square centimeters

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What is the area of a sector in a circle of radius 8cm,if the angle between the radii is 30°

IceJOKER [234]

Answer:

16.75 square cm

Step-by-step explanation:

$Area \: of \: sector = \frac{ \theta}{360 \degree} \times \pi {r}^{2} \\ \\ = \frac{30 \degree}{360 \degree} \times 3.14 \times {8}^{2} \\ \\ = \frac{1}{12} \times 3.14 \times 64 \\ \\ = \frac{1}{3} \times 3.14 \times 16 \\ \\ = \frac{1}{3} \times 50.24 \\ \\ = 16.7466667 \\ \\Area \: of \: sector = 16.75 \: {cm}^{2}$

3 0

3 years ago

John works 6.50 per hour. he worked 40.0 hours last week. what amput is on his check?

qaws [65]

Answer:

40 * 6.5 = 260 --> D. 260.00

7 0

3 years ago

Read 2 more answers

What is √-11 in the form a+bi?

Mice21 [21]

Given:

The number is $\sqrt{-11}$ .

To find:

The a+bi form of given number.

Solution:

We have,

$\sqrt{-11}$

It can be written as

$\sqrt{-11}=\sqrt{-1\times 11}$

$\sqrt{-11}=\sqrt{-1}\times \sqrt{11}$ $[\because \sqrt{ab}=\sqrt{a}\sqrt{b}]$

$\sqrt{-11}=i\times \sqrt{11}$ $[\because \sqrt{-1}=i]$

$\sqrt{-11}=\sqrt{11}i$

Here, real part is missing. So, it can be taken as 0.

$\sqrt{-11}=0+\sqrt{11}i$

So, a = 0 and $b=\sqrt{11}$ .

Therefore, the a+bi form of given number is $0+\sqrt{11}i$ .

5 0

3 years ago

How to solve the equation and rounding the answer to four decimal places

pogonyaev

The answer is 0.5778 or 0.578 rounded

5 0

3 years ago

todd earn $91.00 working for her uncle yesterday if he worked for 6.5 hours how much did he earn per hour

emmasim [6.3K]

Answer= 14 per hour
91/6.5
=14
Todd earn $14 per hour

3 0

3 years ago