Question

A rhombus shaped sheet with parameter 40cm and one diagonal 12cm is painted on both side at the rate of 5₹ per cm³.Find the cot of painting

Answer 1

perimeter=4* side
40=4* side
side=40/4
side=10cm
for another diagonal
latter half of another diagonals equal to b
$p {}^{2} + b {}^{2} = {h}^{2}$
$6 { }^{2} + b {}^{2} = 10 {}^{2}$
$b {}^{2} = 100 - 36$
$b {}^{2} = 64$
b=8cm
another diagonal equal to 16 cm
1 by 2 * 16 *12
equal to 96 CM square