Question
The sides of a rectangle are 12k and 5k; find the value of k if the area of the rectangle is 12960000.
- 9
- 5
- 3
- 6
Hint:
(laws of exponent)
The correct answer is: 3
Side of rectangle are
area of rectangle =length breadth
12960000 =
12960000 = ()
1296000=
k=4
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