Question

A RHOMBUS SHAPED SHEET WITH PERIMETER 40 CM AND DIAGONAL 12 CM , IS PAINTED ON BOTH SIDES AT THE RATE OF ₹ 5 PER CM ^2 . FIND THE COST OF PAINTING .​

Answer 1

Answer:

side = 40/ 4 = 10 cm

diagonal = 12 cm

diagonals bisect each other, so half of first diagonal will be 6 cm.

then,

half of other diagonal = √ of [10^2 - 6^2]

= √ of [100- 36 ]

= √ of 64

= 8

therefore other diagonal = 8×2 = 16cm

area of one side of rhombus sheet = 1/2 × d1 ×d2

= 1/2 × 12×16

= 96 sq. cm

Cost of painting at the rate of Rs. 5 per sq. cm = 192× 2×5 = 960

Answer 2

Answer:

A RHOMBUS SHAPED SHEET WITH PERIMETER 40 CM AND DIAGONAL 12 CM , IS PAINTED ON BOTH SIDES AT THE RATE OF ₹ 5 PER CM ^2 . FIND THE COST OF PAINTING .

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