How many times has the large wheel gone round? timepieces
(a)
minute hand of a watch has a radius of 1.2cm
how far does it travel in (1) an hour (ii) a day (iii) a year?
(b) the minute hand of Big Ben in London has a radius of 4.3 m
the hour hand has a radius of 2.7 m
how far do both travel in a year (in km)
[to convert to miles, multiply by 0.6214]

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,

step-by-step explanation:

x^2 -12x + 36 + y^2 = 36

x^2 + y^2 = 12x

r^2 = 12rcos(theta)

r = 12 cos(theta)

$79500

step-by-step explanation: