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a floral design on a floor is made up of 16 tiles which are triangular the sides of a triangle being 9 cm and 28 cm and 35 cm find the cost of polishing the tiles at the rate of 50p per cm2 |
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Answer» Answer: Sides of a triangle are: A – 9 B-28 C-35 S = a+ b+ c/2 =9+28+35/2 =72/2 =36 cm Area of triangle = √s(s-a)(s-b)(s-c) =√ 36(36-9)(36-28)(36-35) cm² =3*2*3*2√3*2 cm² =36√6 cm² =(36*2.45) cm ² =88.2 cm² (APX) Area of 16 triangles = (16*88.2) cm² =1411.2 cm² Rate of POLISHING = ₹ 0.5 /cm² =(0.5*1411.2)=₹ 705.60 Hope it helps plz Mark as brainliest |
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