Answer:
12.56 (13 if rounded)
Step-by-step explanation:
A=pi x r squared
A=2 squared multiplied by pi
A=4 times pi
plug into calculator should be about 12.56
Answer:
the first five terms are
a1 = 6
a2 = 24
a3 = 60
a4 = 120
a5 = 210
Step-by-step explanation:
the experission used to find the five terms is
an = n3+ 3n2+ 2n
Answer:
40
Step-by-step explanation:
ABD-CBD=ABD
70-30=40
Answer:
14 and 10
Step-by-step explanation:
The ratio of the 2 numbers = 7x : 5x
The sum of the 2 numbers is 24, hence
7x + 5x = 24
12x = 24 ( divide both sides by 12 )
x = 2
7x = 7 × 2 = 14
5x = 5 × 2 = 10
Thus the numbers are 14 and 10