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Dominik [7]
3 years ago
9

Help me find the perimeter of this figure.

Mathematics
2 answers:
Alik [6]3 years ago
5 0

Answer:

8+10+8+10=36+   2 x 3.14 x radium/2

Step-by-step explanation:

Vlada [557]3 years ago
3 0

look at the semicircle

area of semicircle

{ \boxed{ \bold{ \red{A = \pi \:  \times  {r}^{2} }}}}

{ \bold{ \boxed{ \red{radius =  \frac{diameter}{2} } }}}

radius =  \frac{8}{2}  =  \boxed{4}

area =  3.14  \times  {4}^{2}  \\ area = 50.24

as we can see that is a parallelogram

so ,

area of parallelogram

\boxed {\bold{ \red{area \: of \: parallelogram =b \times h }}}

area \:  = 8 \times 10 \\ are \:  = 80in

area of fig = area of semicircle + area of parallelogram

total area = 50.24+80

total area = 130.24 in²

\boxed{130.24 {in}^{2} }

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In ΔKLM, m = 5.9 cm, k = 7.1 cm and ∠L=72°. Find the length of l, to the nearest 10th of a centimeter.
Elena L [17]

Answer:

7.7

Step-by-step explanation:

a ^2+b^2=c^2−2bccosA

l^2 = 5.9^2+7.1^2-2(5.9)(7.1)cos 72

4 0
2 years ago
Se golpea (chuta) un balón sobre el piso y sale dando botes parabólicos cada vez menores. Si se lanzo inicialmente con una veloc
Ipatiy [6.2K]

Answer:

a)d = 180,91 m

b)t = 11,76 seg

Step-by-step explanation:

Para el lanzamiento de proyectil, la ecuación que nos da la velocidad en V(y) es:

V(y)  = Voy - g*t

en donde Voy = Vo * senα    ( donde Vo es la velocidad inicial, α el angulo del disparo.

Si en esta ecuación hacemos V(y) = 0 estamos en el punto donde el componente en el eje y de la velocidad del proyectil es cero, ese punto es el punto medio del recorrido.

0 =  Vo*sen 60⁰     - g*t

g*t  =  Vo* √3/2

t  = { 32 [m/s] * √3 }2*9,8 [m/s²]

t = 16*√3  / 9,8

t = 2,8278 seg

El tiempo total del primer recorrido es entonces por simetría

t₁ = 2 * 2,8278           t₁  = 5,6556 seg

La distancia del primer impacto al suelo es:

x = Vox * t₁                        ( Vox es constante   Vx = Vo*cos 60⁰ )

x  =  32 * (1/2) * 5,6556

x₁  =  90,49 m

Aplicando los mismos criterios ahora para el segundo bote

Ahora Vo = 32 -  32*(1/4)

V = 24 m/s

g*t  =  24 * sen 50⁰

t =  24* 0,7660/ 9,8  

t =  1,8759

2*t  = 2*1,8759

t₂  = 3,7518 seg

x₂  =  Vox * t₂

x₂  =  24* 0,6428*3,7518

x₂  =  57,88 m

Y para el tercer bote Vo =  24 - 24(1/4)        Vo = 18 m/s     α = 40⁰

t = 18 *0,6428/9,8

t  = 1,18

2t  = t₃  = 2*1,18

t₃ = 2,36 seg

x₃  = Vox * 2,36                Vox = Vo*cos 40      Vox = 18*0,7660  

Vox = 13,79

x₃  = 13,79*2,36

x₃  = 32,54 m

La distancia total será

d = x₁  + x₂ + x₃

d  =  90,49  + 57,88 + 32,54

d = 180,91 m

y el tiempo total será la suma de los tiempos

t =  t₁  +  t₂  +  t₃

t  = 5,65 + 3,75 + 2,36

t = 11,76 seg

8 0
3 years ago
Aiden bought some noteboks and book covers for the upcoming school year.He bought a total of 13 items.Each notebook costs $1.37,
NARA [144]
Answer: Aiden bought 8 notebooks and 5 covers.

This is a system of equations problem. To solve this, we have to write 2 different equations and then solve them.

Our equations are:

x + y = 13
1.37x + 1.08y = 16.36

Where x is the number of notebooks and y is the number of covers.

To solve these equations, you can use anyone of these methods:
1) Graphing
2) Substitution
3) Elimination

The easiest way would be to graph them with a graphing calculator and find the point of intersection.
7 0
3 years ago
:):):):):):):):):):):):))​
lina2011 [118]
The answer for this question is B because - -e/-f is the same as - -e/f
5 0
3 years ago
A population of ground squirrels has an annual per capita birth rate of 0.06 and an annual per capita death rate of 0.02. calcul
HACTEHA [7]

.06 of 1,000 =60 added

.02 of 1,000= 20 lost

Answer is 40 added, letter b

Hope you get it?

6 0
3 years ago
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