11-05-2016
Mathematics

contestada

what is the area of the top surface of a circular manhole cover that has a radius of 30 centimeters rounded to the nearest tenth

Respuesta :

apologiabiology apologiabiology

11-05-2016

area=pir^2

r=30
pi aprox=3.141592

aresa=3.141592*30^2
area=3.141592 times 900
aera=2827.43
area=2827.4 cm^2

Answer Link

Otras preguntas

A ferromagnet and electromagnet can be used together to (a) Create a strong magnetic field. (b) Create a weak magnetic field. (c) Cancel any external magnetic f

What is the intersection of the three sets: A = {0, 2, 3, 6, 8}, B = {2, 3, 6, 8, 9}, and C = {1, 2, 4, 8, 9}? A. {2, 8, 9} B. {2, 6, 8} C. {2, 8}

From your data, what factor(s) affect the speed of a wave? Explain your reasoning.

A binary search can be performed only on ____. A. ordered lists B. comparable lists C. unordered lists

A current runs through a wire in the +y direction along the y-axis. What is the direction of the magnetic field at a point (x,y,z) = (0,0,1.045 m)

A workpiece of 2000 mm length and 300 mm width was machined by a planning operation with the feed set at 0.3 mm/stroke. If the machine tool executes 10 double s

Assume the readings on thermometers are normally distributed with a mean of 0degreesC and a standard deviation of 1.00degreesC. Find the probability that a rand

Mary has $2,300. She has decided that she will withdraw a fixed whole-dollar amount of money every month of the year. The fixed whole-dollar amount of money she

when cement is produced, where is carbon released

An electromagnetic standing wave has a frequency of 120 MHz. (3396) Problem 2: What is the distance (in m) between adjacent antinodes of this standing wave?