Answer:
to know the summation of angles: (n-2)*180
here (n) represent numbers of sides
12)we have 5 sides (n=5)
(5-2)*180=540
x=540-(105+135+92+87)=121
13)we have 8 sides (n=8)
(8-2)*180=1080
x=1080-(116+158+141+124+136+132+129)=144
I hope it will help
Answer:
0.4 cm
Step-by-step explanation:
The magnifying glass basically zooms into smaller objects. If the insect appears to be 2cm, then it is actually smaller than this. It cannot be 10 cm.
If the scale factor is 5, then this means that the insect is zoomed in 5 times through the magnifying glass. Use the following ratio:
This fraction can also be seen as division, so:
÷
The insect is actually 0.4 cm long.
(or 4 millimeters)
:Done
Answer:
The SF is 3
Step-by-step explanation:
The sides are 3x the length of the sides of ∆ABC
Answer:
Step-by-step explanation:
Perimeter = 20.56mm
Given the perimeter, find the diameter
= 20.56
D = 20.56 ÷
D = 6.54 mm
Perimeter of the Semicircle = half the circle arc + the straight line (Diameter)
Semicircle = 0.5(20.56) + 6.54cm
Semicircle = 16.83mm
<u>Given</u> -
- the diameter of a semicircle is 6 yards.
ie. d = 6yd
ps - use 3.14 for a
<u>To find</u> -
- the semicircle's perimeter
<u>Solution</u> -
As we know the formula to find the perimeter of the semicircle is 2r + πr.
But A.T.Q we are only provided with the diameter. As we know that the radius is half of the diameter. ie, r = d/2.
Hence, d = 6
r = 6/2
r = 3 yd
Perimeter of semicircle = 2r + πr
Perimeter of semicircle = 2(3) + 3.14(3)
Perimeter of semicircle = 15.42 yd
<u>Hence forth the semicircle's perimeter is 15.42 yd</u>
