+37146 First one:
The formula for a sphere is 4/3 pi r^3
if scale UP 'r' by a factor of 4.5 r^3 will yield a volume (4.5)^3 larger = 91.13 times larger
Second question:
The formula for the volume of a cone is pi r^2 h/3
if we scale it DOWN by 1/2 the r^2 will be 1/4 and the h/3 will become 1/2 (h)/3
so the volume will be ruduced to 1/4 x 1/2 = 1/8 of the original 1/8 (360) = 45 m^3
+37146 First one:
The formula for a sphere is 4/3 pi r^3
if scale UP 'r' by a factor of 4.5 r^3 will yield a volume (4.5)^3 larger = 91.13 times larger
Second question:
The formula for the volume of a cone is pi r^2 h/3
if we scale it DOWN by 1/2 the r^2 will be 1/4 and the h/3 will become 1/2 (h)/3
so the volume will be ruduced to 1/4 x 1/2 = 1/8 of the original 1/8 (360) = 45 m^3
