cutshalljosef cutshalljosef
  • 14-11-2016
  • Mathematics
contestada

A balloon has a circumference of 28 in. Use the circumference to approximate the surface area of the balloon to the nearest square inch.

Respuesta :

FallOutBlink
FallOutBlink FallOutBlink
  • 14-11-2016
Okay so use the surface area= 4x pi x r^2

circumference = 2x pi x r


28 = 2x pi x r

28/2x pi= r
radius = 4.5 ins

surface area = 4x pi x 4.5^2
surface area = 254.5 ins^2
surface area = 255 ins^2 (to the nearest square inch)
Answer Link

Otras preguntas

Vitamin B and folic acid deficiencies are characterized by production of abnormally large erythrocytes called
it rips visual interest to text elements ​
2. How did the Hebrews respond to the actions of Moses?
17 This conversion graph is used to convert between US dollars and British pounds.​
Has the Judicial Branch needed as part of our government or are the other two branches enough to govern the nation? PLS HELP ME
Can anyone please help me on this?
Solve for x. Your answer may be in decimal form. Round to the nearest tenth. Help me with thiz
what was the operation sealtion designed to do​
Write the equation of the line that passes through the points (-8,3) and (3,2). Put your answer in fully reduced point-slope form, unless it is a vertical or ho
-7y-8=6y+18 i need help with this urgent!