2007-09-17 06:50:46 · 10 answers · asked by sup 1 in Science & Mathematics ➔ Mathematics
A = (1/2) π ( 6 ² )
A = 18 π units ²
A = 56.5 units ² (to 1 decimal place)
2007-09-17 07:23:53 · answer #1 · answered by Como 7 · 2⤊ 0⤋
Area is pi*r^2. If the diameter is 12 then the radius is 6 so the area is pi*6^2 which equals 113.097. Taking half of that will give you the area of the half circle which is 56.54.
2007-09-17 06:57:43 · answer #2 · answered by Kennetha W 2 · 0⤊ 0⤋
remember that the formula for a (finished) circle is A = pi * r^2 considering the fact that we are in a position to get the radius from the diameter (that is 0.5 of it), r = 25 subsequently, A = pi * (25)^2 = 625pi Now, that's the component to the entire circle. we choose the component to a million/2 of it. So we purely decrease the section in 0.5 (a million/2) A = (a million/2) 625pi (a million/2) A = (625pi) / 2
2016-12-26 15:23:52 · answer #3 · answered by fraccola 3 · 0⤊ 0⤋
radius is 6
area of whole circle is pi times 6 squared
=36 pi
so area of half circle =18 pi
2007-09-17 06:55:49 · answer #4 · answered by rosie recipe 7 · 2⤊ 0⤋
area of half circle = 1/2[pi(d^2)/4]
= 1/2[pi(12^2)/4]
= 1/8[144 pi]
= 18 pi
2007-09-17 06:59:07 · answer #5 · answered by mohanrao d 7 · 0⤊ 0⤋
Area of circle=Pir^2=3.14x6^2=3.14x36
=113.04
so area of half a circle=1/2(113.04)=56.52 ans
2007-09-17 07:00:19 · answer #6 · answered by MAHAANIM07 4 · 0⤊ 0⤋
radius = diameter/2 = 6, and hald circle area = .5 * r^2 * pi = 18pi = 56.55 (approx.)
2007-09-17 06:56:12 · answer #7 · answered by John V 6 · 0⤊ 0⤋
diameter is 12 so radius is 6
area of circle is pie*r^2
for half circle divide by 2
so solve now
2007-09-17 06:58:45 · answer #8 · answered by Anonymous · 0⤊ 0⤋
area = Pi x r^2
area = 3.14 x (12/2)^2
area = 3.14 x 6^2
area = 3.14 x 36 = 113.04
113.04 / 2 = 56.52
2007-09-17 06:56:00 · answer #9 · answered by Bill W 【ツ】 6 · 0⤊ 0⤋
pi*r^2/2
pi*6^2/2
pi*18
56,55
2007-09-17 06:55:56 · answer #10 · answered by Maci 6 · 1⤊ 1⤋