Question

if a wooden log of diameter 84cm has a length of 3.6 m find the volume of log give the answer in square meter

Answer 1

daimeter = 0.84 = 0.42 m
hight = 3.6 m
volume of cylinder = π r^2h
22/7×0.42×0.42×3.6
22×0.6×0.42×3.6
1.99504 m^3
= 19.9504 m^2

Answer 2

$diameter = 84cm \\ radius = 42cm \\ length = 3.6m = 360cm \\ volume = \pi {r}^{2} h \\ v = \frac{22}{7} \times {42}^{2} \times 360 \\ v = 22 \times 6 \times 42 \times 360 \\ v = 1995840cm \\ v = 19958.4m$