A rhombus shaped sheet with perimeter 40cm and one diagonal. 12cm, is painted on both sides at the rate of rs 5 perm². Find the cost of painting
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Answer:
perimeter of rhombus = 4× side
Step-by-step explanation:
40 = 4×side
side= 10 cm
p, q are the diagonals of rhombus
side =(√ p^2 +q^2) /2
10 = (√ 12×12 + q^2) /2
400 = 144+ q^2
q^2 =256
q = 16
area = pq/2
=( 12× 16) /2
= 96 cm^2
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