B. There are 52 cards 13 of each kind
13/52 13 clubs 52 cards altogether
13 diamond and since you do not replace the first card now there's 51 card a the second time
13/52 times 13/51
1/4 times 13/51 = 13/204
X=original price
increased by 20%
100+20=120
increased by 20% means times 1.20
1.20x is new price
then reduced by 10%
100-10=90
1.20x times 0.90=final price
1.08x=final pricie
given final price=194.40
1.08x=194.40
divide both sides by 1.08
x=180
the original price was $180
Well, for starters it’s not 20 it’s 02 you must have made a mistake on your question then,
Answer:
756π cm^3.
Step-by-step explanation:
Volume of the cone
270π = 1/3 π r^2 h
270π = 1/3 π r^2 * 10
r^2 = 270 / ( 10/3 )
r^2 = 81
r = 9 cm.
So the volume of the hemisphere = 1/2 * 4/3 * π * 9^3
= 486π cm^3.
So the volume of the whole solid = 270π + 486π
= 756 π cm^3.