12x is the correct answer

diameter = 4m
radius = 4/2
= 2m
volume = (3.14)(2^2)(6.3)
= 79.128m^3
<h2><u>Diagram</u><u>:</u><u>-</u></h2>

<h3><u>Required Answer</u><u>:</u><u>-</u></h3>
The diagonals of the Rhombus= d1 & d2=6cm and 8cm
Let the Side=a
As we know that in a Rhombus











<h2>_____________</h2><h3>Again </h3>
we know that in a Rhombus





Perimeter of the rectangle is 20cm.