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Surface area of the sphere: 4*pi*52 = 100*pi square units

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โˆ™ 2013-11-11 12:56:25
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Q: What is the value of the surface area of a sphere with a radius of 5 units?
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What is the value of A(5) the surface area of a sphere with a radius of 5 units?

It is 314.159 or 100*pi square units.


What is the radius of a sphere when the surface area is 803.84?

Surface area: 4*pi*radius2 = 803.84 Making the radius the subject of the above gives it a value of 7.9979719132 or about 8 units in length. Check: 4*pi*7.99797191322 = 803.84 square units


What is the value of V(4) the volume of a sphere with a radius of 4 units?

Volume of the sphere: 4/3*pi*4 cubed = 268.083 cubic units rounded to 3 decimal place


What is the value of V(3) the volume of a sphere with a radius of 3 units?

It is: 4/3*pi*3 cubed = 36*pi cubic units


Surface area equals 4ar2 where are is the radius of the sphere a is a constant that is roughly equal to 3 what is the surface area of a sphere with a radius of 7 meters?

Using your value of a, the answer is 4x3x7x7 square metres. More accurate to use the correct value of a, which is pi (ie nearer to 3.142) 588.2 m2


How do you find the volume of a sphere if the radius is a negative number?

radius is a scalar quantity, it can not have a negative value.


Surface area of sphere with volume 0.2 meters?

For the question to have any meaning, the volume should be in cubic metres, not metres. The surface area of a sphere of radius r is 4*pi*r*r and its volume is 4/3*pi*r*r*r. Use the second equation to find the value of the radius, r and then use that value in the first equation to calculate the surface area.


What Pi used for?

Pi has many usages in mathematics some of which are:- Area of a circle = pi*radius squared Circumference of a circle = diameter*pi or 2*pi*radius Surface area of a sphere = 4*pi*radius squared Volume of a sphere = 4/3*pi*radius cubed Volume of a cone = 1/3*pi*radius squared*height The value of pi is found by dividing the circumference of a circle by its diameter


What is the radius and diameter if the area of a circle is 81 square units?

pi*radius squared = 81 square units Divide both sides by pi and then square root both sides to find the value of the radius. radius = 5.077706252 or 5 units in length to one significant figure 2 times radius = diameter = 10 units in length


What is the surface area of a sphere with volume of 140cm?

Volume: 4/3*pi*radius3 = 140 By making the radius the subject of the above gives it a value of 3.221166265 cm Surface area: 4*pi*3.2211662652 = 130.387557 square cm


How do you find the percent increase of a sphere when the radius is tripled?

There are two methods, you can decide which is easier for you to follow. 1. Calculate the value for surface area (4π(r^2)) or volume ((4/3)π(r^3)) depending on the problem you're working on, using the new value and the old values for the radius. Then, take the new radius (the triple-sized one) and subtract the previous value, and divide that number by the previous value to get the decimal. To make that into a percentage, multiply by 100. 2. Subtract the smaller radius by the larger one. Calculate the value for surface area/volume. That solution is the difference in surface area/volume due to the larger radius. Then, divide that number by the original surface area/volume (the solution of the original radius put through the equation) to get the decimal. Multiply by 100 to make a percentage.


What is the approximate volume of the sphere if the surface area is 482.8mm squared?

Volume of a sphere is given by V = 4/3 x π x r3. So for the calculation of volume we should have the value of radius. The value of radius can be known from the given surface area. Surface of a sphere = 4 x π x r2 482.8 mm2 = 4 x π x r2 r2 = 482.8/(4 x π) mm2 r2 = 38.42 mm2 r = 38.421/2 mm = 6.19 mm So Volume of Sphere can, now, be calculated: V = 4/3 x π x 6.193 mm3 = 993.48 mm3.

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