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stich3 [128]
3 years ago
11

WILL GIVE BRAINLIST PLEASE HELP im so confused ​

Mathematics
1 answer:
astraxan [27]3 years ago
8 0

Answer:

8.1

Step-by-step explanation:

1) Find the measurement of the angle of the arc:

let x = the missing angle

360 = 73 + 65 + 150 + x

x = 72

2) Find the circumference

r = 6.48

C = 2(6.48)(3.14)

C = 40.6944

3) Multiply the circumference by the angle measurement divided by the the angle measurement of the circle:

40.6944 * (72/360)

= 40.6944 * (1/5)

=8.13888

4) Round to the nearest tenth

8.1

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3 0
3 years ago
476 Marks<br> boole<br> Calculate the area of this triangle.<br> 17 cm<br> 8 cm<br> 15 cm
Naddika [18.5K]

Answer:

Step-by-step explanation:

sides =8 cm, 17 cm and 15 cm

Area of triangle by Hero's Formula,

S=a+b+c/2

S=17+8+15/2

S=40/2

S=20

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

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4 0
3 years ago
If AB = 4 centimeters, which is closest to BC?
Misha Larkins [42]

Answer:

The correct answer AC = 11.52

Step-by-step explanation:

From the figure attached with this answer shows the triangle ABC.

BC=4 centimeters, m angle B=m angle c, and m angle a = 20 degrees

To find AC

From the figure we can see that D is the mid point and AD⊥BC

Then BD = CD = 4/2 = 2 cm

<BAD = 10° and <CAD = 10°

By using trigonometric ratio,

sin 10 = CD/AC = 2/AC

AC = 2/sin 10 = 2/0.1736 = 11.52

Therefore the value of AC = 11.52 cm

4 0
3 years ago
Read 2 more answers
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