$2\pi r^2$

$3\pi r^2$

$4\pi r^2$

$\pi r^2$

$\pi r^2h$

$\pi\left(R^2-r^2\right)h$

$\pi\left(R-r\right)^2h$

$\pi\left(h^2-r^2\right)R$

Frustum of sphere

Frustum of cone

Frustum of pyramid

Frustum of cylinder

$\pi\left(R^2-r^2\right)$

$2\pi\left(R^2-r^2\right)$

$\pi r^2$

$2\pi r^2$

a sphere and a cylinder

a hemisphere and a cylinder

a hemisphere and a cone

a cylinder and a cone

Cylinder

Cone

Sphere

Hemisphere

$\pi\left(r_1+r_2\right)l$

$\frac{1}{3}\pi h\left(r_1^2+r_2^2+r_1r_2\right)$

$\frac{1}{3}\pi l\left(r_1^2+r_2^2+r_1r_2\right)$

$\pi h\left(r_1^2+r_2^2+r_1r_2\right)$

6500

7000

6050

7500

circle

frustum of cone

sphere

hemisphere

$\pi\left(r_1+r_2\right)l$

$\frac{1}{3}\pi h\left(r_1^2+r_2^2+r_1r_2\right)$

$\frac{1}{3}\pi l\left(r_1^2+r_2^2+r_1r_2\right)$

 $\pi\left(r_1+r_2\right)h$