A parallelogram has sides 30m and length 14m and one of its diagonals is 40m long.Then,find its area.
Area of parallelogram=2*Area of triangle
Area of triangle=
S=1/2(30+14+40)
S=42
Area=√s(s-a)(s-b)(s-c)=168
Area of parallelogram=2*168=336
If diagonals of a rhombus are 5cm and 12cm,find the length of its side?
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Find the area of a rhombus one side of which measures 20cm and one diagonal 24cm.