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3 years ago

Please help me on this

Mathematics

2 answers:

jeka57 [31]3 years ago

7 0

Answer:

A =256 cm^2

Step-by-step explanation:

The perimeter of a square is 64 cm

P = 4s where s is the side length

64 = 4s

Divide by 4

64/4 = 4s/4

16 =s

The side length is 16 cm

The area of a square is

A = s^2

A = 16^2

A =256 cm^2

Tasya [4]3 years ago

6 0

Answer:

Step-by-step explanation:

Perimeter=64

Since there are four sides, we divide 64 by 4

64/4=16

1 side = 4 cm

Area = l x w

4 x 4 = 16

Therefore your area of the square is 16

Hope this helps!

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If you're using the app, try seeing this answer through your browser: brainly.com/question/2927231

————————

You can actually use either the product rule or the chain rule for this one. Observe:

• Method I:

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Differentiate it by applying the product rule:

$\mathsf{\dfrac{dy}{dx}=\dfrac{d}{dx}(cos\,x\cdot cos\,x)}\\\\\\
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—————

• Method II:

You can also treat y as a composite function:

$\left\{\!
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$\therefore~~\boxed{\begin{array}{c}\mathsf{\dfrac{dy}{dx}=-2\,sin\,x\cdot cos\,x}\end{array}}\qquad\quad\checkmark$

I hope this helps. =)

Tags: <em>derivative chain rule product rule composite function trigonometric trig squared cosine cos differential integral calculus</em>

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