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zhannawk [14.2K]
3 years ago
11

Help me and will give brainlessness

Mathematics
2 answers:
Vika [28.1K]3 years ago
8 0

Rounding is simple:

  • If the previous digit is 5-9, round the number to the left of it up a number. If it is 4-0, leave the number to the left of it as it is.

For 82.98, we can round 82 to 83, since 82 is the whole number and the previous digit is 9 (so we round up).

For 169.645, we scratch off 45. Since 6 is in the tenth's place and the previous digit of it is 4, we leave it at 169.64.

:)

Maurinko [17]3 years ago
5 0
1. 68.8
2. 49.5
3. 22
4. 83
5. 170
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find the circumference of a circle that has an area of 452.16 square meters. (Use 3.1416 as the value of π.)
IceJOKER [234]
(1) circumference of a circle = 2π.R
(2) area of a circle = π.R²

Area = 452.16 m² (given), so we can calculate the radius:
452.16 = π.R²
452.16/π = R²

143.92 = R²  → R =√143.92 ≈ 12 m
Having R = 12, now we can calculate the circumference :

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4 years ago
what is the greatest possible are of a triangle with one side of length 7 and another side of length 10?
Reil [10]
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a=7
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3 years ago
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