JEE Math Practice Question
Distance between two parallel planes $$\,2x + y + 2z = 8$$ and $$4x + 2y + 4z + 5 = 0$$ is :
- A.$${9 \over 2}$$
- B.$${5 \over 2}$$
- C.$${7 \over 2}$$
- D.$${3 \over 2}$$
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