A perfect sphere of lead has radius 6 cm, and weighs 1710 grams. What is its density? Give your answer in g/cm^3. [Density = mass/volume]

To find the density, we need to divide mass by volume, and we already know the mass, so must find the volume.  V = 4/3.pi.r^2, and plugging in r=6 gives V = 48.pi, about 150.8 cm^3. The mass is 1710, which we keep in grams as that is what the answer requires.  Density = 1710/48.pi = 11.3 gcm^-3.

Answered by Ruth H. Maths tutor

3193 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

A curve has the equation y = 4x^2 + 5x + 3 and a line has the equation y = x + 2. Show that the line and the curve have one point of intersection.


Simplify : 4(x+5) / x^2+2x-15


Solve the equation ((2x+3)/(x-4))-((2x-8)/(2x+1))=1


2(y+3) = 10. What is y?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences