World Fossil Fuel Regulation UK Coal Energy
Extraction
Electricity
(1000stonnes) production
per year
perkg (units)
What is the total number of units (in millions) of electricity
produced each year based on the current extraction rates
of coal from all mines combined assuming all mines have
an endless supply of coal?
Remaining
coal (millions
of tonnes)
UKMines
Folen
46,324
170
68.27
Dirme
34,953
123
70.95
lit
74036
14.2
62.73
O 1.05 million
Ryken
13,684
210
6102
G
All Others
285,306
147
82 63
O 4.29 million
- 1 tonne = 1.000 kilograms
- An average UK household utilises 4.5 units of electricity per day
-One unit of electricity is sold for £0.08
O 7.87 million
O 8.2 million
O 11.9 million
4 of 8

answer: ratio of volume of cone (with 3 times the height and equal diameter) to volume of cylinder is 2 to 1. the value of π is not used.

step-by-step explanation:

radius is diameter/2 = 4.

area of circle is π r^2.

volume of cylinder is height × area of base = hπr^2 = 3(4^2) π = 48π cubic inches.

not knowing the formula for volume of cone, i calculate it using calculus (which is for calculating things).

volume of cone is integral 0 to h area(y) dy. area(y) is π r(y)^2. r(y) runs r to zero as y runs zero to h, r(0) = r, r(h) = 0.

r(y) = r - r/h y

area(y) = π (r - r/h y)^2 = π (r^2 - 2r^2y/h + r^2y^2/h^2) = π r^2(1-2y/h+y^2/h^2)

antiderivative area(y) = π r^2 (y-y^2/h+y^3/(3h^2))

integral 0 to h = π r^2(h-h^2/h+h^3/(3h^2) - (0)) = π r^2(h - h + h/3) = π r^2(h/3) = π/3 r^2 h

volume of this cone is π/3(4^2)18 cubic inches.

= 6 16 π = 96π cubic inches.

cone has twice the volume, 96/48.

cone height is 6 times the cylinder.

ratio of volume formula: π r^2 cancels.

cone over cylinder ratio is 6h/3 to h, 2 to 1.

$54.99

step-by-step explanation:

$54.99 includes 500 min. if she does not exceed 500 min then her bill is $54.99

2 over 5 and 4 over 15

don’t know last one sorry

step-by-step explanation: