Cheflulu5727

09.04.2021 • 

Mathematics

A metal cube has sides of length 4.5 cm, correct to the nearest 0.5 cm. the cube has melted down and the metal is used to make small spheres. each sphere has a radius of 3mm, correct to the nearest millimetre.

work out the greatest number of spheres that could be made from metal.

show your working clearly.​

Ответ:

jesse7412

21.04.2022

Mathematics

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8(1+tan^2x)+4tan^2x-12=0.
8+12tan^2x-12=0
12tan^2x=4
tanx=1/sqrt(3)
x=atan(1/sqrt(3))
x=0.5236

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