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horrorfan [7]
3 years ago
12

Work out the area of this circle.

Mathematics
2 answers:
nadezda [96]3 years ago
7 0

Answer:

314.2

Step-by-step explanation:

Multiply the diameter by pi

fgiga [73]3 years ago
3 0

Answer:

Area = 314.2 cm²

Step-by-step explanation:

Area of a circle = πr²

π = 3.142

r = 10 cm

Area of the circle = 3.142 × 10²

Area = 3.142 × 100

Area = 314.2 cm²

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satela [25.4K]

The answer should be 3/2. if x/y = 2/3 then it should be assumed x is equal to 2 and y is equal to 3, therefore if you flip it then you simply flip 2/3 into 3/2 and arrive at the answer.

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NISA [10]
16 is 69 but the answer is 83
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lions [1.4K]

Answer:

85 degrees.

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5 0
3 years ago
The ratio of the angles of a triangle is 5:2/3:1. what are the measures of all three angles​
Art [367]

The ratio of the angles of a triangle is 5: 2/3: 1 Then the measure of all three angles are 135, 18, 27 respectively.

<u>Solution:</u>

Given that, the ratio of the angles of a triangle is 5: \frac{2}{3}: 1

We have to find what are the measures of all three angles.

Let us suppose, "x" is the highest common factor of three angles.

Then, the three angles will be 5x, \frac{2}{3}x, x

Now, we know that, sum of angles of a triangle equals to 180

\text { Then, } 5 x+\frac{2}{3} x+x=180

\begin{array}{ll}{\rightarrow} & {6 x+\frac{2}{3} x=180} \\\\ {\Rightarrow} & {x\left(6+\frac{2}{3}\right)=180} \\\\ {\Rightarrow} & {x\left(\frac{6 \times 3+2}{3}\right)=180} \\\\ {\Rightarrow} & {x\left(\frac{18+2}{3}\right)=180} \\\\ {\Rightarrow} & {x \times \frac{20}{3}=180} \\\\ {\Rightarrow} & {x=180 \times \frac{3}{20}} \\\\ {\Rightarrow} & {x=9 \times 3=27}\end{array}

So, the three angles will be,

5x = 5 \times 27 = 135\\\\\frac{2}{3} \times 27 = 18\\\\x = 27

Hence, the angles of the triangle are 135, 18, 27 respectively.

8 0
4 years ago
Given the system of equations. Which of the {-5x+y=6 --&gt; y=5x+6 3x-y=14}
Molodets [167]
The first thing we must do is solve the problem step by step to choose the correct option.
 Step 1:
 Clear y from the first equation:
 -5x + y = 6
 y = 5x + 6
 Step 2:
 Replace this value of y in the second equation:
 3x-y = 14
 Substituting:
 3x- (5x + 6) = 14
 answer
 the resulting equation after an equivalent expression for y is substituted into the second equation is 
 3x- (5x + 6) = 14

6 0
3 years ago
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