Two cones have a radius of 2 cm. the height of one cone is 8 cm. the other cone is 1/4 of that height. which of these statements is not true?

Out of given option only option (d) is wrong.

The volume of the smaller cone cannot be determined because its height is unknown.

Step-by-step explanation:

Given two cones with radius 2 cm.

The height of one cone is 8 cm an the height of other cone is of the height of first cone.

Height of second cone = of the height of first cone.

                                     =

Volume of  cone =

Thus, Volume of smaller cone =

                              =

                               =

Thus, out of given option only option (d) is wrong.

The volume of the smaller cone cannot be determined because its height is unknown.

t= half of the arc subtended by t.

r= half of the arc subtended by r.  

t+r= half of the arc subtended by t + half of the arc subtended by r= half of 360=180

step-by-step explanation: