Radius....help!!?

Question

The total surface area in square centimeters of a circle with a 30 cm radius is:

A. 3600 pie
B. 360 pie
C. 900 pie
D. 9000 pie

Answer 1

Area = πr²
Area = π x 30 x 30 cm²
Area = 900π cm²
ANSWER C

Answer 2

The answer is C. Since the formula for calculating a surface area of a circle is pi x radius squared, you just multiply 30 by 30, and pi

Answer 3

Surface Area of a Circle = (pi)(r)^2

Where: r = 30 cm and pi = Greek symbol representing 22 / 7
Therefore: Surface Area = (pi)(30 cm)^2
Simplified: Surface Area = (30 cm)(30 cm)(pi)
Calculated: Surface Area = 900 cm^2 pi

Therefore C is your answer.

Answer 4

radius is 30cm and Area is given by radius squared pi. 30 squared is 900. So the answer is 900 pi.

Answer 5

Well, if you're only looking for the surface area of a circle, then the surface area is simply it's area, or SA = A = (pi)r^2

A = (pi) (30)^2

A = 900 pi

C is your answer.

Answer 6

formula is simple A = "pi" r ^ 2

so you get 30 x 30 x "pi" = 900 "pi", so the answer is C

also its not pie, its pi. Pie is a food, Pi is the greek letter for "p"

Answer 7

area= pi x radius squared
area= pi x (30 x 30)
area= pi x 900
c is correct answer

Answer 8

Area=pi*radius^2
Area=3.14*30^2
Area=3.14*900

Area = 900 pi:C

Answer 9

None of the above. You say, hey I'd like a piece of blueberry pie and a cuppa jo. Then let's see how far it is for your host to walk across the kitchen and plug in the kettle. That would be linear distance.

Answer 10

Area=3.14*r*r
=3.14*30*30
=900*3.14
=900 pie

'C' is the correct answer