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Determine the ratio of the volumes of the two similar spheres.
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4 stepsDetermine the ratio of the volumes of the two similar spheres.
Let be the volume of the smaller sphere and be the volume of the larger sphere.
The ratio of the volumes (smaller to larger) is:Simplify the fraction by dividing both numerator and denominator by their greatest common divisor, which is 176:
So, the volume scale factor (VSF) from the smaller to the larger sphere is .
Determine the linear scale factor (LSF).
The linear scale factor is the cube root of the volume scale factor:
This means that the linear dimensions (like radii) of the smaller sphere are times those of the larger sphere.
Determine the area scale factor (ASF).
The area scale factor is the square of the linear scale factor:
This means that the surface area of the smaller sphere is times the surface area of the larger sphere.
Calculate the surface area of the larger sphere.
Let be the surface area of the smaller sphere and be the surface area of the larger sphere.
We are given .
Using the area scale factor:To find , rearrange the equation:
The surface area of the larger sphere is:
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