Erence Example 11
A circle has a radius of 7.5 cm. A sector
with an angle of 240° is cut out from the
circle.
a) Find the length of the arc of the sector.
b) If the sector is folded to form a cone,
find, correct to one decimal place:
i) the radius of the cone.
ii) the height of the cone.
iii) the volume of the cone.
iv) the curved surface area of the cone.
[Take a = 3.142]​

hdjd

step-by-step explanation:

substitute,

circle 1 = 5

circle 2 = 20

circle 3 = 44

in this case no matter how you add, you will always get a perfect square..

hence proved

happy to

pls mark as brainliest

step-by-step explanation:

let pq = qr = rs = x, and xz = y and zu = z.

if the horizontal lines are parallel, then corresponding segments are in proportion:

substitute:

therefore 3 = y = z.

xu = y + z → xu = 3 + 3 = 6