Maths problem help me please?

andy-wilson_60ac2d0a553ac

the rectangle shown has an area of 480cm^2 and length of 30cm. Find it's perimetor

david-w

So, we know 30 * width = 480

therefore width = 480/30 = 16

So, rectangle is 16*30, perimeter is then 2 * 16 + 2 * 30 = 92 cm

dwread

L = 30

LW = 480

W = 16

perimeter = 2L + 2W = 92 cm