Volume and Surface area of Three-Dimensional Figures

$$V=lwh$$  in this figure  $$l=12,\ w\ =5.1,\ h\ =7$$  

 Find the Volume

$$SA\ =\ 2lw+2lh\ +2wh$$  In this figure  $$l=15,\ w=10,\ h=10$$  
What is the surface area of this figure?

$$S.A.=hp\ +2B$$  in this firgure h=8, p=perimeter of triangle and B= area of triangle base. 

Find the total surface area of the prism.

$$S.A.\ =\ 2\pi r^2+2\pi rh$$  in this picture  $$r=4,\ h\ =11$$  

What is the surface area of the cylinder?

$$S.A.=\frac{1}{2}lp+B$$ in this picrture $$l\$$  = 4 (height of triangle face), p = 4(2)= pereimeter of square base, B=2(2) = area of the square base. 

Find the Surface Area

What formula represents volume of a sphere?

Find the total surface area of the sphere.

Use the pi button and round to the nearest tenth.

(a)  

What is the volume of the hemisphere? Use the pi button and round to the nearest tenth

(a)  

The beach ball has a surface area of 5026.55 square centimeters. How tall is the ball? (Hint: Find the diameter of the ball)

$$2\pi rH+2\pi r^2$$  

Find the total surface area. Use 3.14 for pi. Round to the nearest tenths.