Question

A lead pencil is a cylinder of wood with
graphite filled into it. The diameter of pencil
is 7mm and diameter of graphite is 1mm.
length of pencil is 10cm. Find weight of whole
pencil if density of wood is 0.7gm/cm^3 and
of graphite is 2.1 gm/cm^3​

Answer 1

Answer:

2.805g (nearly 3 gram.) Explanation in image.It helps you.