Math, asked by asifasif46372, 5 months ago

त्रिभुज कार बोर्ड की भुजाओं कामा 5 सेंटीमीटर 12 सेंटीमीटर और 13 सेंटीमीटर है तो इस बोर्ड पर रोते इस प्रति सेंटीमीटर की दूर से पेंटिंग करने का वयम ज्ञात कीजिए​

Answers

Answered by Anonymous
3

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If the sides of the triangle car board are 5 cm, 12 cm and 13 cm, find the size of the painting on this board from the distance per centimeter weeping.

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Semi perimeter of triangle s =

 \frac{5 + 12 + 13}{2}  \\  = 15cm

Therfore,

Area of triangle⇒

A= \sqrt{s(s - a)(s - b)(s - c)}  \\  =  \sqrt{15(15 - 5)(15 - 12)(15 - 13)}  \\  =  \sqrt{ 15 \times 10 \times 3 \times 2}  \\  =  \sqrt{900}  \\  = 30 {cm}^{2}

Cost of painting =Rs.30 per sq.centimeter

Therefore,

Cost of painting sheet =30×30=Rs.900

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