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MAVERICK [17]
3 years ago
14

A piece of art is in the shape of an equilateral triangle with sides of 7 inches each. Find the area of the piece of art to the

nearest tenth. Explain how you know.
Mathematics
1 answer:
gtnhenbr [62]3 years ago
8 0

Answer:

21.2 in²

Step-by-step explanation:

The area of an equilateral triangle is given as :

Area, A = √3/4 * a²

Where, a = side length of the equilateral triangle

a = 7 inches ; Recall that all sides of an equilateral triangle are the same.

Put a = 7 in the equation :

A = √3/4 * a²

A = √3/4 * 7²

A = 0.4330127 * 49

A = 21.217 in²

Area, A = 21.2 in²

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irinina [24]
The square root of  (64/225)  is the same as  √64 / √225 . 
That could make the whole thing easier.

Do you know what either of those separate square roots is ?

You're right !    I'm so impressed!
The square root of  64  IS  8, and the square root of  225 surely is  15 .
You really know your stuff !

So now, the expression is  √64 / √225  =  <em>8 / 15</em> .

Oh, I almost forgot, it has a negative sign before it.  OK,so the answer is <em>- 8/15</em> .

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Answer:

I'm assuming we need to find the number of minute she as used. to do that we can right an inequality with m being the number of minutes

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Step-by-step explanation:

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Answer:

E

Step-by-step explanation:

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