91Ó°ÊÓ

A rectangle has length $2.4$ and width $1.8$. Find the length of a diagonal.

Find the length of the side of a square with diagonal of length $12$.

The diagonals of a rhombus have lengths $16$ and $30$. Find the perimeter of the rhombus.

Find the geometric mean between the two numbers.

$49$and $25$

Find the values of $x,y,$and $z$.

Prove: In a right triangle, the product of the hypotenuse and the length of the altitude drawn to the hypotenuse equals the product of the two legs.