Question

Rahul makes a cuboid of plasticine of sides 3cm*6cm*4
cm. How many such cuboids will he need to form a cube .

Answer 1

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A child is standing at the edge of a straight highway watching her grandparents' car driving away at a constant 21.6 m/s. The air is perfectly clear and steady, and after 11.5 minutes the car's two taillights (646 nm) appear to merge into one. Assuming the diameter of the child's pupils is 5.60 mm, calculate the width of the car.