DSSSB · Mathematics
If the radius of a sphere is doubled, then how many times will its surface area increase?
- 8
- 2
- 16
- 4
यदि किसी गोले की त्रिज्या दोगुनी कर दी जाए, तो उसके पृष्ठीय क्षेत्रफल में कितने गुना वृद्धि होगी?
- 8
- 2
- 16
- 4
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