the raddi of two concentric circles are 123 centimetres and 73 CM respectively by how much does the area of a outer circle exceed the area of the of the inner circle
Answers
Answered by
5
inner radius = 73cm
Area of inner circle = π×73^2
outer radius = 123cm
Area of outer circle = π×123^2
difference= π×123^2 - π×73^2 = π×(123^2 - 73^2) = π×(123+73)(123-73) = 22/7 × 196 × 50 = 30800 cm^2
outer circles exceeds inner circle in ara by 30800cm^2
Area of inner circle = π×73^2
outer radius = 123cm
Area of outer circle = π×123^2
difference= π×123^2 - π×73^2 = π×(123^2 - 73^2) = π×(123+73)(123-73) = 22/7 × 196 × 50 = 30800 cm^2
outer circles exceeds inner circle in ara by 30800cm^2
shanthi3:
^ it means
what it means
that's power. 2^2 = 2×2 = 4......2^3 = 2×2×2 = 8.......5^2 = 5×5=25... like that
thanks
Similar questions