Solving Sphere Ratio Problem: Diameters, Areas & Volumes

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The diameter of the first sphere is twice that of the second sphere, leading to a ratio of their areas and volumes that can be calculated using the formulas for surface area and volume of a sphere. The area ratio is determined by the square of the diameter ratio, resulting in a 4:1 ratio for areas. For volumes, the ratio is based on the cube of the diameter ratio, yielding an 8:1 ratio for volumes. Calculating for spheres with diameters of 1 and 2 confirms these ratios. Thus, the area and volume ratios for spheres with diameters d and 2d are 4:1 and 8:1, respectively.
Paradiselovek
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Plz help me on this problem:

THe diameter of a certain sphere is 2 times the diameter of a second sphere.

B what is the ratio of their areas?
C. What is the ratio of their volumes?

I try to put 1 and 2 as a diameter of the sphere then compare its areas and volumes but I'm not sure if the ratio is a 100% correct. Plz help me on this.
 
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What did you get for spheres of diameter 1 and 2?

What do you get for spheres of diameter d and 2d?
 

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