Question

The edges of a triangular board are 6 cm, 8 cm and 10 cm. The cost of painting it at  0.09 per cm2is​

Answer 1

Answer:

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Step-by-step explanation:

have a great day ahead

Answer 2

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s= 2a+b+c

= 26+8+10 =12

By Heron's formula,

Area of the triangle = s(s−a)(s−b)(s−c)

= 12(12−6)(12−8)(12−10)

= 12(6)(4)(2)

=24cm ^2

Cost of painting =9×24 paise =216 paise = Rs. 2.16.