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3 years ago

What is the perimeter of this red polygon? Please Need Help Badly!!

Mathematics

1 answer:

iogann1982 [59]3 years ago

7 0

Add all the side that is
22+27+22+98=169in

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An equilateral triangle has a perimeter of 48 cm. What is the area?

KiRa [710]

Answer:

$A=64\sqrt{3}\ cm^2$

Step-by-step explanation:

we know that

An equilateral triangle has three equal sides and three equal interior angles (each interior angle measure 60 degrees)

The perimeter is equal to

$P=3b$

where

b is the length side of the equilateral triangle

we have

$P=48\ cm$

substitute

$48=3b$

solve for b

$b=48/3\\b=16\ cm$

Find the area

The formula of area applying the law of sines is equal to

$A=\frac{1}{2}b^2sin(60^o)$

substitute the value of b

$A=\frac{1}{2}(16)^2sin(60^o)$

$sin(60^o)=\frac{\sqrt{3}}{2}$

$A=\frac{1}{2}(16)^2(\frac{\sqrt{3}}{2})$

$A=64\sqrt{3}\ cm^2$

6 0

2 years ago

Twenty times a square of a positive integer plus 50 equals negative 40 times the square of the positive integer plus one-hundred

rusak2 [61]

20x^2+50 = -40x^2+110x [ Taking x as the unknown positive integer ]

4 0

3 years ago

Use the equation below to find T, if w=85, m= 12, and a=3. T=w-ma T = 3,060 X ?

saw5 [17]

Answer:

T = 49

Step-by-step explanation:

T = w - ma

w = 85

m = 12

a = 3

Plug in the corresponding numbers to the corresponding variables:

T = (85) - (12) * (3)

Remember to follow PEMDAS. PEMDAS is the order of operations, and stands for:

Parenthesis

Exponents (& Roots)

Multiplications

Divisions

Additions

Subtractions

First, multiply, then subtract:

T = 85 - (12 * 3)

T = 85 - 36

T = 49

T = 49 is your answer.

6 0

2 years ago

100 lbs divided by 2.2 equals what

Keith_Richards [23]

The answer is 45.4545454545

3 0

3 years ago

Read 2 more answers

the dimension of an office confrence are 8ft by 16 ft. the confrence room blueprint diemension are 4 cm by 8cm, whatbis the scal

Juliette [100K]

1cm for every 2ft is your answer

5 0

3 years ago