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bulgar [2K]
3 years ago
7

Please tell me what the area formula and circumference formula is for a circle?

Mathematics
1 answer:
Whitepunk [10]3 years ago
5 0
The formula for the Circumference of a circle is 2•Pi•R, or 2•Radius•3.14
This is to calculate the measurements around the circle.

The formula for the Area of a circle is Pi•R^2, or 3.14•R•R
This is to calculate the entire circle.

I hope this helps!
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The roof of a new sports arena rests on round concrete pillars. The maximum load a cylindrical column of a circular cross sectio
KATRIN_1 [288]

Answer: There are 3.5 metric tons will be supported by a column 8 m high and two thirds m in diameter.

Step-by-step explanation:

Since we have given that

Height of columns of arena = 9 m

Diameter = 1 m

Load = 14 metric tons

Since Load is directly varies as the fourth power of the diameter 'd', and inversely as the square of the height.

so, Mathematically, it is expressed as

L=\dfrac{kd^4}{h^2}\\\\14=\dfrac{1.k}{9^2}\\\\14\times 81=k\\\\k=1134

If the height of columns = 8 m

Diameter = \dfrac{2}{3}\ m

So, Load would be

L=\dfrac{1134\times (\dfrac{2}{3})^4}{8^2}\\\\L=3.5\ tons

Hence, there are 3.5 metric tons will be supported by a column 8 m high and two thirds m in diameter.

7 0
3 years ago
a CANDLE IS IN THE SHAPE OF A TRIANGULAR PRISM.tHE BASE Has an area of30 squareinches. The candle hs a height of 6 inches. Find
Readme [11.4K]
The volume of a triangular prism by definition is given by:
 V = (Area of the base) * (height)
 Substituting the values we have:
 V = (30) * (6)
 V = 180 in ^ 3
 Answer:
 
The volume of the sail in the form of a triangular prism is:
 
V = 180 in ^ 3
4 0
3 years ago
Simplify (-7b2)(-2b3)
Ivanshal [37]

Answer: 145

Step-by-step explanation:

(−72)(−23)

−72(−23)

1423

6 0
3 years ago
Which expression is equivalent to sec^2x − 1? a. cot2x b. tan2x c. csc2x d. cos2x
Nesterboy [21]
Sec^2 x - 1 = tan^2x

Proof:
Sec^2x = 1+ tan^2x

1/cos^2x = 1 + sin^2x/cos^2x

<span>1/cos^2x - sin^2x/cos^2x = 1
</span>Using common denominator:
(1-sin^2x)/cos^2x = 1
sin^2x + cos^2 x = 1
cos^2 x = 1 - sin^2x
Substituting : 
cos^2x/<span>cos^2x = 1
</span>1 = 1
Left hand side = right hand side 
4 0
3 years ago
Read 2 more answers
Find the missing side lengths.
mestny [16]
The second option is the correct answer
7 0
3 years ago
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