Answer: Option (D)
Explanation: When two oceanic plate moves in opposite direction due to the convection current generated in the mantle, the crust gets thinner and eventually magma comes out to the ocean floor, forming new crust. Due to this divergent movement, a chain of volcanic arc are formed in their vicinity.
For example, the Hawaiian.
Hence the correct answer is option (D).
Salt water makes up 97 percent of the earth's waters as 3 percent is only fresh water.
Using Pythagorean's Theorem of a^2+b^2=c^2, with a and b being two legs and c being the hypotenuse.
You can find that the leg(15) squared is 225. The hypotenuse(17) squared is 289.
289-225=64
The square root of 64 is 8
So the missing leg of the triangle has a length of 8 units.
