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

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

The thesis should be phrased as a question?

Which substance has a definite shape and a definite volume at STP?

69 - v -10 43 ) = 5X-10+3 which inequality can be used to find the domain of f(x)? . o Vex20 ox20 o 5x-1020 X-10+320

what is changed about a rock during mechanical weathering

Planning for a group photograph does not need to be done before you are ready to take the picture a false teet planning for a group photograph does not need to

The poverty line is the A. level of annual income equal to the amount of money necessary to purchase the minimal quantity of food required for adequate nutriti

When the price of oranges increases from $4 to $6 per bag, the quantity demanded of oranges decreases from 800 bags to 700 bags. The price elasticity of demand

Based on the graph, which inequality is correct for a number that is to the right of -4? A number line is shown from negative 8 to 8 at increments of 1. A circl

Most economies of the world are mixed. True or False

Identify the natural resources that drove european powers to colonize Africa during the late 1800s.