Find the length of the diameter, the circumference, and the area of the circle. The radius is 11 cm.
Thanks in advance!
Can you help me with this?
2008-03-20 4:01 pm
回答 (11)
2008-03-20 4:04 pm
✔ 最佳答案
r=radiusd=diameter
Diameter= 2r x π
Diameter= 22cm
Circumference= dπ
Circumference= 22π cm or 69.12 cm
Area= r^2 x π
Area= 121π cm squared or 380.13 cm squared
A best answer would be nice. :)
2008-03-21 12:31 am
dia = 2 x r = 22 cm
when using pi = 3.14
circumference = 2 x (pi) x r = 2 x 3.14 x 11 = 69.08 cm
area = pi x r x r = 3.14 x 11 x 11 = 379.94 cm^2
but if u want a better approximation value, take a better app. for pi.. ie: pi = 22/7
if you use pi = 22/7
circumference = 69.142857142857142857........... cm
area = 380.2857142857............cm
you might have noticed that the val .142857 repeats in the decimal point value............
do you know why????????????????
try it out and just mail me your answer............................
................... coz maths is fun!!!!!!!!!!!
when using pi = 3.14
circumference = 2 x (pi) x r = 2 x 3.14 x 11 = 69.08 cm
area = pi x r x r = 3.14 x 11 x 11 = 379.94 cm^2
but if u want a better approximation value, take a better app. for pi.. ie: pi = 22/7
if you use pi = 22/7
circumference = 69.142857142857142857........... cm
area = 380.2857142857............cm
you might have noticed that the val .142857 repeats in the decimal point value............
do you know why????????????????
try it out and just mail me your answer............................
................... coz maths is fun!!!!!!!!!!!
2008-03-20 11:16 pm
1)
11 x 2
= 22 centimeters
2)
11 x 2 x 3.14
= 22 x 3.14
= 69.08 centimeters
3)
11^2 x 3.14
= 121 x 3.14
= 379.94 square centimeters
11 x 2
= 22 centimeters
2)
11 x 2 x 3.14
= 22 x 3.14
= 69.08 centimeters
3)
11^2 x 3.14
= 121 x 3.14
= 379.94 square centimeters
2008-03-20 11:14 pm
Its radius is half the circle, so its diameter is 22cm.
The Circumferance is:
C= pi x diameter
C=69.12
The area is:
A=pi x radius^2 (or squared)
A=380.13 cm
The Circumferance is:
C= pi x diameter
C=69.12
The area is:
A=pi x radius^2 (or squared)
A=380.13 cm
2008-03-20 11:09 pm
diameter is 2(11)=22
circumference=2 pi R=2(22/7)11=22(3.14)=68.08
area is pi R^2= 3.14(121)=379.94
circumference=2 pi R=2(22/7)11=22(3.14)=68.08
area is pi R^2= 3.14(121)=379.94
2008-03-20 11:08 pm
diameter = 2x11 = 22 cm
circumference = 2 x pi x radius = 2 x 3.14 x 11 = 69.08 cm
area = pi x radius^2 = 3.14 x (11)^2 = 379.94 cm^2
circumference = 2 x pi x radius = 2 x 3.14 x 11 = 69.08 cm
area = pi x radius^2 = 3.14 x (11)^2 = 379.94 cm^2
2008-03-20 11:06 pm
PI=3.14159
circomference = 2PI r = 2 (3.14159) (11) Multiply
area = PIr^2 = (3.14159) (121) Multiply
diameter = 2 r = 22
circomference = 2PI r = 2 (3.14159) (11) Multiply
area = PIr^2 = (3.14159) (121) Multiply
diameter = 2 r = 22
2008-03-20 11:06 pm
diameter= 2 x radius
=22
Circumference = pi x diameter
=3.14 x 22
=69.08cm
Area = pi x (r^2)
=3.14 x 11^2
=3.14 x 121
=379.94 cm^2
;-)
=22
Circumference = pi x diameter
=3.14 x 22
=69.08cm
Area = pi x (r^2)
=3.14 x 11^2
=3.14 x 121
=379.94 cm^2
;-)
2008-03-20 11:04 pm
This is really easy, I'll give you the formulas you lazy bastard.
circumference = 2(pi)(radius)
diameter = 2(radius)
area = pi(radius)^2
circumference = 2(pi)(radius)
diameter = 2(radius)
area = pi(radius)^2
2008-03-20 11:04 pm
Circumference=22*(pie)
Area=121*(pie)
Diameter=22cm
Area=121*(pie)
Diameter=22cm
收錄日期: 2021-05-01 10:22:48
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