Diamond height perimeter

The diamond has an area of 36.9 cm² and a side length of 9 cm.
a) How many cm does the height of the diamond measure?
b) Calculate the perimeter of the diamond.

Your answer:

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You need to know the following knowledge to solve this word math problem:

algebra

rearrange variables

planimetry

area of a shape
perimeter
rhombus

Grade of the word problem

practice for 12 year olds

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