Question

A rhombus sheet whose perimeter is 32m and 1 diagonal is 10 m long is painted on both the side at the rate of rupees 5 per metre square find the cost of the painting

Answer 1

Answer:

Step-by-step explanation:

Let ABCD be a rhombus and AC=10cm, then by SSS Both triangles ABC and ADC are congruent. Now we need to calculate area of triangle ABC using Heron's formula.

S=8+8+10/2

=13

Now area=√s(s-a)(s-b)(s-c)

=> √13(13-8)(13-8)(13-10)

=> √13×5×5×3

=>5√39

=>5×6.244

= 31.22 m²

Area =62.44 m²

Cost =62.44×5×2

=₹624.4 (approx)