Question

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0,3. The diagonals of a rhombus are 18 cm and 10 cm. Find i. its area ii. length of its side iii. its perimeter.
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Answer 1

Answer:

Diagonal of rhombus are 18 cm and 24 cm.

area of rhombus = 1/2 x Product of diagonals

= 1/2 x 18 x 24

= 216 cm2

(ii) Diagonals of rhombus bisect each other at right angles.



∴ OA = (1/2) × 24 = 12 cm

OB = (1/2) × 18 = 9 cm

In right ∠d ∆ AOB



∴ Side of rhombus = 15 cm

(iii) Perimeter of rhombus = 4 × side

= 4 × 15 = 60 cm

answer by swati