2 years ago

If the area of an equilateral triangle is 9root3 cm square find its side

Mathematics

1 answer:

kobusy [5.1K]2 years ago

7 0

Answer:

6 cms.

Step-by-step explanation:

If the side of an equilateral triangle is 2x cm then its height is √3x and its base is 2x.

Area = 1/2 * base * height

9√3 = 1/2 * 2x * √3x

9√3 = x * √3x

9 = x^2

x = 3

So length of each side = 2*3 = 6.

x = 9

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2 years ago

Can someone help me with 7 1/2 ÷ 1 9/10 please and thank you

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2 years ago

Read 2 more answers

The hypotenuse of a right triangle is 9 inches long and another side is 6 inches. Find the length of the missing side. Round you

olga nikolaevna [1]

A² + b² = c²
a² = c² - b²
a² = 9² - 6²
a² = 81 - 36
a² = 45
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a = 6.7

3 0

3 years ago

Solve the simultaneous equations

nexus9112 [7]

Answer:

Step-by-step explanation:

2x + 3y = 2

x = 2 - 3y /2

x + y = 0

substitute the value of x

$\frac{2 \\- 3y}{2}$ + y = 0

2 - 3y + 2y = 0

2 = y

again,substitute the value of y

x = 2 - 3y / 2

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6 0

2 years ago

Convert 39°C to degrees Fahrenheit.

posledela

Given a temperature C in celsius, you can convert it to Fahrenheit by using the formula

$F=32 + \dfrac{9C}{5}$

In your case C=39, so you have

$F = 32 + \dfrac{9\cdot 39}{5} = 32+70.2=102.2$

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2 years ago

If the area of an equilateral triangle is 9root3 cm square find its side​

If the area of an equilateral triangle is 9root3 cm square find its side