1.

the edges of a triangular board are 6cm , 8cm and 10 cm . find the cost of painting it at the rate of rs 14 per square cm. (dont forget 10 cm plss)​

Answer»

Answer:

Area = 1/28base*height

= 1/2*6*8 = 24 CM square

cost of painting = 24*9= 216 = 2 rs 16 paisa

Dont get confused. This TRIANGLE is a right ANGLED triangle as the SIDES comply with pythagoras theorem.

So no need for heron.

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