I can sneak up on you or be right in front of you without you knowing. But when I reveal myself you will never be the same. Who am I?

What is forming a pliable medium, such as clay or paper mache’, into a sculpture?

Achair of height 1 m is placed 1 m in front of a plane mirror. a girl is standing 3 m behind the chairas shown. find the minimum length of the plane mirror in order that she can see the whole imageof the chair.a. 0.50 mb. 0.75 mc. 0.80 md. 1.00 m

This sculpture from the hellenistic period is entitled