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MakcuM [25]
2 years ago
14

The diameter of a circle is 62cm

Mathematics
2 answers:
andreev551 [17]2 years ago
8 0
Answer is 3017.5 cm^2
Reason

We know diameter is 62
Radius (r) is 1/2 of diameter so r=31

Formula for area
A= pi r^2
Fill in what we know
A= (3.14) (31^2)
Multiply
A=3017.54
Round to 1 dp
A= 3017.5

Maksim231197 [3]2 years ago
7 0

Step-by-step explanation:

Area = 22/7¥r²

Area = 3.14 × 31cm × 31cm

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Write the explicit rule for the arithmetic sequence
blagie [28]
Given that:
a1=27, an=(an-1)+4
the second term will be:
a2=a1+4
a2=27+4=31
The explicit formula for arithmetic sequence is given by:
an=a+(n-1)d
where:
a= first term
d=common difference
n=nth term
from the information given:
a=27
d=31-27=4
thus the explicit formula will be:
an=27+(n-1)4
an=27+4n-4
an=23+4n

Answer: an=23+4n
6 0
3 years ago
Solve for v: -4(v - 2) + 3 > -3(v + 9)
vitfil [10]

Answer:

-4v + 8 > -3v - 9

-v + 8 > -9

-v > -17

v < 17

7 0
3 years ago
Read 2 more answers
What is a reasonable distance between two cities? A. 200 km B. 200 m C. 200 cm D. 200 mm
Charra [1.4K]

Answer:

200 KM  about 124 miles

Step-by-step explanation:

200 m is only 0.12 miles

200 cm is 78 inches

200 mm is 20 cm or 7.8 inches

6 0
3 years ago
Plz plz plz help plz i need help
nadezda [96]

Answer:

62/10

Step-by-step explanation:

All the other options are positive integers, which are natural numbers.

6 0
3 years ago
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Simplify (3a^4-2a^2+5-10)-(2a^4+4a^2+5a-2)
katrin [286]

Answer:

Step-by-step explanation:

3a^4 -2a^2 + 5 - 10 -(2a^4 +4a^2 + 5a -2)

as given.. i'm wondering if the 5 in the first group is really 5a.. hmmm

I'm guessing that it is...  soooo distribute the minus sign

= 3a^4 - 2a^2 +5a -10  -2a^4 -4a^2 -5a +2

= a^4 -6a^2 -8   :)  voila that's your answer

7 0
3 years ago
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