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Kipish [7]
2 years ago
15

Circumference of the circle

Mathematics
2 answers:
Alja [10]2 years ago
8 0

Answer:

37 5/7

Step-by-step explanation:

use formular it will be 2pie -22/7 ×radius

since we have been given only radius it will be

2×22/7×6=37 5/7

liraira [26]2 years ago
5 0

\qquad\qquad\huge\underline{{\sf Answer}}♨

Let's find the circumference of given circle ~

Circumference :

\qquad \tt  \dashrightarrow \:  2\pi{r}^{}

where, r = radius

Now, let's calculate it ~

\qquad \tt  \dashrightarrow \:  c = 2×\pi{}^{}×6

\qquad \tt  \dashrightarrow \:  c =  12\pi\:  \: m

That's the answer I terms of π, but we can also plug in the approximate value of pi as 3.14

\qquad \tt  \dashrightarrow \:  c = 12 \times 3.14{}^{}

\qquad \tt  \dashrightarrow \:  c =  37.68\:  \: m

\qquad \tt  \dashrightarrow \:  c \approx 37.7\:  \: m

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Answer:

Step-by-step explanation:

These types of equations are called simultaneous equations and the method we can use to solve these type of equations is either Substitution, Elimination and Graphing.

We use substitution here because it is easier.

Equation 1

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Equation 2

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Lets take equation 1

7x-2y=16\\7x=16+2y\\x=\frac{16+2y}{7}

This is our equation 3 , now put it inside equation 2.

11x+6y=32.3\\11(\frac{16+2y}{7} )+6y=32.3\\\frac{176+22y}{7} +6y=32.3\\\frac{176+22y+42y}{7}=32.3\\176+22y+42y=226.1 \\\\42y+22y=226.1-176\\64y=50.1\\y=\frac{50.1}{64} \\y=0.783\\

We found the value of y , now to find the value of x insert the value of y in equation 3

x=\frac{16+2y}{7}\\x=\frac{16+2(0.783)}{7} \\x=\frac{16+1.566}{7}\\x=\frac{17.566}{7}\\x=2.509

Solved ! See the attached image on both the straight line graphs i have attached for better understanding. Where both the lines intersect each other is our value of (x , y) respectively.

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