The perimeter of a square with side lengths of $a$a is given by the formula $P=4\times a$P=4×a.
Find $P$P if the length of each side is $5$5 cm.
The area of a square with side lengths of $a$a is given by the formula $A=a^2$A=a2.
Find $A$A if the length of each side is $6$6 cm.
The area of a rectangle is given by the formula $A$A$=$=Length$\times$×Width.
If the length of a rectangle is $2$2 cm and its width is $3$3 cm, find its area.
Evaluate $a+b+c$a+b+c if $a=10$a=10, $b=15$b=15, and $c=11$c=11.