Question

A rectangular metal plate has a length of 65cm and a width of 35cm.it is melted down and recast into circular discs of the same thickness.how many complete discs can be formed if.

Options :
A)the radius of each disc is 3cm
B)the radius of each disc is 10cm​

Answer 1

A) (65×35)/(π×9) = 80.46 = 80 cm²

B) (65×35)/(π×100) = 7.24 = 7 cm²

Answer 2

Answer:

Kepler's laws apply: First Law: Planetary orbits are elliptical with the sun at a focus. Second Law: The radius vector from the sun to a planet sweeps equal areas in equal times. Third Law: The ratio of the square of the period of revolution and the cube of the ellipse semimajor axis is the same for all planets.

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Step-by-step explanation: