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3 years ago

Find the

Mathematics

1 answer:

Mazyrski [523]3 years ago

3 0

Answer:

54 cm

Step-by-step explanation:

The area (A) of an equilateral triangle is

A = $\frac{s^2\sqrt{3} }{4}$ ( s is the side length ) then

$\frac{s^2\sqrt{3} }{4}$ = 81 $\sqrt{3}$ ( multiply both sides by 4 to clear the fraction )

s² $\sqrt{3}$ = 324 $\sqrt{3}$ ( divide both sides by $\sqrt{3}$ )

s² = 324 ( take the square root of both sides )

s = $\sqrt{324}$ = 18

Thus

perimeter = 3 × 18 = 54 cm

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Answer:

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Step-by-step explanation:

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Step 1)

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Now the equation becomes h/7=cos(pi/3 t)

Step 2)

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Step-by-step explanation:

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Step-by-step explanation:

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4 years ago

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skad [1K]

Answer:

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Step-by-step explanation:

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The equation of a circle has the following format:

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3 years ago