3 years ago

Find the area of the regular 30-gon with radius 10 mm.

Mathematics

1 answer:

Irina-Kira [14]3 years ago

4 0

Answer:

This polygon is comprised of 30 congruent triangles, each with a central angle of 12°

And using trig, each has an area of......

(1/2)(20)^2 sin(12°) = 41.5823381636 sq ft

So, 30 times this = 1247.470144908 sq ft = 1247.5 sq ft (rounded to the nearest tenth)

You might be interested in

Choose four point from the table. Compare rates (linear Representation)

daser333 [38]

Answer:

Step-by-step explanation:

Give me brain list plssssss

5 0

3 years ago

What makes n true 1/2 (n+4)=6

AlexFokin [52]

Answer: N=8

Step-by-step explanation: So 1/2*4=2 then you know that you need 4 to get to six because you already have two. Then 8/2=4 so N=8.

1/2(8+4)=6

4+2=6

6=6

Hope this helped!!!!!

8 0

3 years ago

Plzz I beg someone to finish ALL of this :(. I’ve stayed up all night to do this but I couldn’t figure all of them out. Pls pls

Paha777 [63]

Answer:

17: 6:48

18: 9:45

19: 85 minutes or 1 hour and 25 minutes

20: 165 minutes or 2 hours and 45 minutes

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

2. Find the area. The figure is not drawn to scale.<br> 4 cm<br> 17 cm

BabaBlast [244]

area=base x height so i’m thinking it’s 4x17=68

7 0

3 years ago

Find the equation of the line that passes through the pair of points. (-5,3) (-5,0)

sladkih [1.3K]

Answer:

x = -5

Step-by-step explanation:

Note that x does not change. Hence, this line is a vertical one, and its slope is undefined. The line is defined by the equation x = -5.

8 0

3 years ago