Chemistry
posted by Mary .
Calculate the area in square meters of a circular skating rink that has a radius 11.2m. The relationship btwn the (A) and the radius (R) is A=

What's the problem here? A = pi*r^2
Respond to this Question
Similar Questions

PreCalculus
The surface ares S (in square meters) of a hot air ballon is given by s(r)=4 pi r^2 where r is radius of balloon (in meters). If the radius r is increasing with time (in seconds) according to the formula r(t) = 2/3t^3, t is greater … 
math
direct variation the surface area of a sphere varies directly as the square of the radius. if the surface area of a sphere is 36 pi meters squared when the radius is 3 meters, what is the surface area of a sphere with a radius of 6 … 
math
A rectangular skating rink measuring 30m by 20m is doubled in area by adding a strip at one end of the rink and a strip fo the same width along one side of the rink. Find the width of the strips if the enlarged rink is still rectangular. 
CALC
The radius in meters of a circular oil slick increases at a rate of (12  0.3t), where t is measured in hours. Which of the following expressions would calculate the rate at which the area of the oil slick is increasing when the radius … 
math
If the radius of a circular wave is increasing at 2 meters/sec, how fast is the area changing when the radius is 5 meters? 
math
If the radius of a circular wave is increasing at 2 meters/sec, how fast is the area changing when the radius is 5 meters? 
Math (1 question)
estimate the area of a circle with a radius of 27 meters. Use 22/7 for pi. A. 258 square meters B. 1,125 square meters C. 2,291 square meters D. 5,253 square meters 
Geometry
7. What is the surface area of a conical grain storage tank that has a height of 24 meters and a diameter of 16 meters? 
Geometry
7. What is the surface area of a conical grain storage tank that has a height of 24 meters and a diameter of 16 meters? 
math
Problem 1:A semicircular garden has a radius of 10 meters. What is its area?