Question

Please answer all the questions

Answer 1

formula of volume is =1/3 x 22/7 x r x r x 12

as it is already given in the semicircle it is 3 inches as it perfectly fits under the cone

now volume = 1/3 x 22/7 x 3 x 3 x 12
as one inch = 2.5cm
then: 1/3 x 22/7 x 7.5 x7.5 x 30= 22/7 x 56.25 x 10= 22 x 80.35= 1,833.7cm cube (approx)

Answer 2

Radius of the cone is the same as radius of the hemisphere which is 3 inches.
Volume of the cone is the area of the base, multiplied by the height, and divided by three: (π3²×12)÷3=113.097in³;
Volume of the hemisphere: (4/3(π3³))/2=56.54in³;
Volume of the whole container: 56.54+113.1=169.6in³.