An equilateral triangle has a side length of 16 cm work out the area of the triangle.

Mathematics

2 answers:

bonufazy [111]3 years ago

4 0

Answer:

128cm²

Step-by-step explanation:

A=½×b×h

A=½×16cm×16cm

A=½×256cm²

A=128cm²

uysha [10]3 years ago

4 0

Answer:

110.9 cm²

Step-by-step explanation:

The area (A) of an equilateral triangle is calculated as

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

Here s = 16, thus

A = $\frac{16^2\sqrt{3} }{4}$

= $\frac{256\sqrt{3} }{4}$ = 64 $\sqrt{3}$ ≈ 110.9 cm² ( to 1 dec. place )

You might be interested in

Really need help ASAP

Kipish [7]

The third and fourth charts represent functions

4 0

3 years ago

Can someone help me understand this question?

JulijaS [17]

Hey there!

For Part A, because the amount earned on Sunday isn't specified, we can call this additional income x. Because we're writing an expression, we don't need an equal sign. The expression will be (x + 14).

For Part B, "2 less than" will mean "– 2" and "twice than" will mean the amount of dogs that Alicia walked times 2. We can call the amount that Alicia walked y to avoid confusion with the last expression (though you could use whatever variable here) and your expression will be (2y – 2).

Hope this helped you out! :-)

3 0

3 years ago

Graph: y +2=

olga_2 [115]

Answer:

see below

Step-by-step explanation:

The point-slope form of the equation of a line is ...

y -h = m(x -k)

for a line with slope m through point (h, k).

Comparing this to the given equation, you see that ...

h = -2, m = 1, k = -4