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Finger [1]
3 years ago
9

In geometry, Heron's formula (sometimes called Hero's formula), named after Hero of Alexandria, gives the area of a triangle by

requiring no arbitrary choice of side as base or vertex as origin, contrary to other formulae for the area of a triangle, such as half the base times the height. Use Heron's Formula to find the area, in square yards, of ΔABC.
A. 5.591
B. 7.385
C. 8.270
D. 6.495

Mathematics
1 answer:
Scrat [10]3 years ago
3 0

Answer:

D. 6.495 ft²

Step-by-step explanation:

s = \frac{a+b+c}{2}        Substitute

s = \frac{7+3+5 }{2}        Add

s = 15/2          Divide

s = 7.5

Now use the equation for area

A = \sqrt{s(s-a)(s-b)(s-c)}       Substitute

A=\sqrt{7.5(7.5 - 7)(7.5-3)(7.5-5)   Subtract in the parentheses

A=\sqrt{7.5(0.5)(4.5)(2.5)}                      Multiply

A=\sqrt{42.1875}                                     Take the square root

A = 6.495 ft²

If this answer is correct, please make me Brainliest!

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Answer:

V = 43323 mm³

(second answer is already correct)

Step-by-step explanation:

these pennies make up the shape of a cylinder, so, we can solve this question by solving for the volume of a cylinder.

the volume of a cylinder can be found with the formula:

V = πr²h

(V = volume ; π = pi ; r = radius ; h = height)

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plugging our measurements into the volume formula:

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And yes, the volume is not affected by a change in shape. (you are correct)

hope this helps!!

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