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telo118 [61]
3 years ago
11

Find the circumference of 21cm

Mathematics
1 answer:
hoa [83]3 years ago
6 0
132cm) so so du Di Di xi Fi vi du du du do go
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Find the area of the circle with the given radius or diameter. Use pi = 3.14. d = 10 A =
labwork [276]

The formula in computing the area of the circle is:

A = pi (r)^2

Where r = the radius of the circle

Since you are only given the diameter of the circle, you have to solve for its radius. The radius of the circle is half its diameter. Therefore, the radius of the circle is 5 (10/2).

Now, you substitute the measurements to the formula:

A = 3.14 (5)^2

A = 3.14 (25)

A = 78.5 sq. units

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2 years ago
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The opposite angles of a parallelogram are congruent, so you have to set the values of each angle equal to each other and solve for x.

(10x-19)° = (7x+23)°
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Then, substitute the value of x back into the equations.
(10x-19)°
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2 years ago
David leaves reading at 11 45am. he arrives at cardiff at 1 45pm. david drives at an average speed of 56 miles per hour. work ou
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Step-by-step explanation:

speed = distance/time

we know the speed and the time (11:45am to 1:45pm = 2 hours).

distance = speed × time = 56 m/h × 2 h = 112 miles

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1 year ago
X= 0 , 1 , or 7<br> Y= -10, 5, or 10<br> Please helppppp will mark Brainliest
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Step-by-step explanation:

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Solve for n <br>n+1 3/5 =3 3/10
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The answer is N=17/10
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