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Leona [35]
3 years ago
10

The area of a circle is 113.04 square meters. What is the circle's radius? (Using 3.14 as pi)

Mathematics
2 answers:
notka56 [123]3 years ago
4 0

Answer:

6

Step-by-step explanation:

113,04=3,14×r²

113,04/3,14=r²

*√ both sides*

=6

julia-pushkina [17]3 years ago
3 0

Answer:

R=6 PLS GIVE ME BRAINLIST

Step-by-step explanation:

113.04=3.14R^2

36=R^2

R=6

WE HAVE to work backwards so we first plug in the area and then divide 3.14 by the area so we get 36 and then find a number tht squares to 36 which is 6

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1 year ago
The area of a circle is 47.39cm2. find the length of the radius rounded to 2 dp.
Tpy6a [65]

The length of the radius rounded to 2 decimal points is 3.88cm.

In geometry, the area enclosed by a circle of radius r is pie  πr^2.

How to round decimals?

Rounding decimals consists of rounding a decimal number to a certain number of decimal places, to save time and help us express really long numbers in shorter terms. There are certain rules to follow when rounding a decimal number. Put simply, if the last digit is less than 5, round the previous digit down. However, if it’s 5 or more than you should round the previous digit up. So, if the number you are about to round is followed by 5, 6, 7, 8, 9 round the number up. And if it is followed by 0, 1, 2, 3, 4 round the number down.

The area of circle is 47.39cm^2.

Putting it in the formula we get

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r = 3.88 cm

Hence the length of the radius rounded to 2 decimal points is 3.88cm.

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