Answer:
B.
Step-by-step explanation:
The order of the letters in the side's name should correspond to their position in the name of the triangle.

Here's the solution ~
As we know, we can calculate the circumference of a circle in terms of its diameter as :

where, c = circumference and d = diameter
And also, circumference of circle is terms of radius (r) is :

Now, let's move on to questions ~
<h3>First </h3>


<h3 />
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<h3>Second</h3><h3 /><h3 /><h3 /><h3>

</h3>

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<h3>Third</h3>


・ .━━━━━━━†━━━━━━━━━.・
<h3>Fourth</h3>



・ .━━━━━━━†━━━━━━━━━.・
<h3>Fifth </h3>



・ .━━━━━━━†━━━━━━━━━.・
<h3>Sixth</h3>



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Answer:
11.C
12.B
Step by step explanation:
Answer:
The second option
Step-by-step explanation:
Here, we need to multiply each part of the matrix by -10.
This will give us: [ -230 380 ]
[ -170 60 ]
So, the answer is the second option.