2007-10-12 21:26:32 · 17 answers · asked by AMANDA C 1 in Science & Mathematics ➔ Mathematics
50.24 square centimetres
2007-10-12 21:32:03 · answer #1 · answered by jockman432004 4 · 1⤊ 0⤋
Area of a circle =22/7*r^2
= 22/7*4*4
= 352/7
= 50.28571 cm^2
2007-10-13 04:35:26 · answer #2 · answered by Akshitha 5 · 0⤊ 0⤋
Pi x Radius to the power of 2; circle formula.
2007-10-13 07:42:10 · answer #3 · answered by Calum of Calderdale 3 · 0⤊ 0⤋
area of a circle = Ï r^2 where ( Ï = 3.14 or 22/7)
area = 3.14 * 16
= 50.24 cm^2
best of luck but you have to study these as well
area of square= side^2
area of rectangle = length * width
area of triangle = 1/2 base * height
2007-10-13 05:08:31 · answer #4 · answered by crazy_haboush 2 · 0⤊ 0⤋
Area of a circle is pi x r^2= pi x 16 = 50.27 sq cm (2 d.p.)
2007-10-13 04:40:59 · answer #5 · answered by Ellis 6 · 0⤊ 0⤋
A = Ï x 4 ² cm ²
A = 16 Ï cm ²
A = 50.3 cm ² (to 1 decimal place)
2007-10-13 12:45:04 · answer #6 · answered by Como 7 · 0⤊ 0⤋
you have to do it on a calculator -> pi multiplied by the square of the radius,
so in this case = pi multiplied by 16 = 50.26cm squared
2007-10-13 04:36:01 · answer #7 · answered by Anonymous · 0⤊ 0⤋
a= pi* (r squared)
a= pi*16
50.2654824574 and on and on.
50.27 sq centimetres to 2 decimal points, if that's good enough.
2007-10-13 04:40:36 · answer #8 · answered by champer 7 · 0⤊ 0⤋
pi*4*4 cm squared
2007-10-13 04:29:58 · answer #9 · answered by Anonymous · 0⤊ 0⤋
area= pie r(squared)
= pie times 4 times 4
if this is a paper 1 question,leave your answer is 16 pie.
if it is paper 2,the answer is 50.3cm (3.sig.fig)
2007-10-13 04:54:35 · answer #10 · answered by dark 3 · 0⤊ 0⤋