Which of the following statements are true? (there may be more than one correct choice.)

(a) the sunken lead displaces a volume of water equal to the lead's own volume.
(b) the floating lead displaces a volume of water equal to the lead's own volume.
(c) the sunken lead displaces a volume of water whose weight equals the lead's weight.
(d) the floating lead displaces a volume of water whose weight equals the lead's weight

option (A)

Explanation:

According to the Archimede's principle, when a body s immersed partly or wholly in a liquid, it experiences an upward force which is called buoyant force. The buoyant force is equal to the loss in the weight of body.

The weight of liquid displaces by the body is equal to the loss in weight of body.

Thus, option (a) is true.

i think it because equal matrices have equal dimensions, only square matrices can be symmetric. for all indices and . every square diagonal matrix is symmetric, since all off-diagonal elements are zero. in linear algebra, a real symmetric matrix represents a self-adjoint operator over a real inner product space.