yes you do
measure it's sides and then multipy them.
30ft... You multipy the width by the length
you multipy a fraction by taking a number and mulitiply the same number to the numerator and denominator and get ur answer
36 cm2 Area of a rectangle is length times width, so you would multipy 12cm by 3 cm to get 36 sq. (squared) cm.
Squaring
you multipy the smaller denomnater to equal the other fraction and multipy the numarter by the same number as the denomneter got multiplied by
to multiply a number by itself
numerator by numerator, denominator by denominator
you add it to the coeficent then multipy the denominator
multipy the radius by 2
2
4