In excel pls

Problem $2$: Perform the same computation as in first problem, but for the frustrum of a cone, as depicted in figure. Do not use the bracketing method or open method you preferred in previous problem, use the other ones. Employ the following values for your computation: $r_1=0\mathrm{.}4m,r_2=1m,h=1m,$ frustrum density: ${}_f=250k\frac{g}{m}3,$ and water density: ${}_w=1000k\frac{g}{m}3.$ Note that the volume of a frustrum is given by

$V=\frac{h(r_1^2+r_2^2+r_1{r}_2)}{3}$

Note: Both problems will be solved by a bracketing method and an open method. Whichever bracketing or open method used for one problem should not be used for other problem. By the end, all $4$ root finding methods will be used.