please help :( please help :( please help :( please help :( please help :( please help :(

Answer:
113.1
Step-by-step explanation:
Pi*r^2*h
Pi*3^2*4=113.1
Hope this helps
Answer:
Q 3. 75.4 yards cube
Q 4. 66 mm cube
Step-by-step explanation:
Q 3. V cylinder= 2pi r h
r=3 yd
h=4 yd
apply the values in formula
[tex]2\pi \times 3 \times 4 = 75.4 \: yrds {}^{3} [/tex]
Q4. V triangular prism=1/2 a×b×h
a=3 mm
b=4 mm
h=11 mm
[tex]0.5 \times 3 \times 4 \times 11 = 66mm {}^{3} [/tex]