Answer:
Rs.
Step-by-step explanation:
There are total 16 tiles in shape of triangle.
Area of tiles = 16 * area of 1 triangle
By heron's formula
Area of triangle =
Here, s is the semi-perimeter,
and a, b, c are the sides of the triangle
Here, a = 9cm , b = 28cm , c = 35cm
=
Area of tiles = 16 * area of 1 triangle ΔABC
Cost of polishing per centimetre square are is 50p
Cost of polishing area = Rs.
= Rs.
Therefore, it will cost Rs. while polishing all the tiles.
Hope it helps you buddy!!!
Hope.....It Helps....
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Answers & Comments
Answer:
Rs.![705.60 705.60](https://tex.z-dn.net/?f=705.60)
Step-by-step explanation:
There are total 16 tiles in shape of triangle.
Area of tiles = 16 * area of 1 triangle
By heron's formula
Area of triangle =![\sqrt{s(s-a)(s-b)(s-c)} \sqrt{s(s-a)(s-b)(s-c)}](https://tex.z-dn.net/?f=%5Csqrt%7Bs%28s-a%29%28s-b%29%28s-c%29%7D)
Here, s is the semi-perimeter,
and a, b, c are the sides of the triangle
Here, a = 9cm , b = 28cm , c = 35cm
Area of triangle =![\sqrt{s(s-a)(s-b)(s-c)} \sqrt{s(s-a)(s-b)(s-c)}](https://tex.z-dn.net/?f=%5Csqrt%7Bs%28s-a%29%28s-b%29%28s-c%29%7D)
=![\sqrt{36(36-9)(36-28)(36-35)} \sqrt{36(36-9)(36-28)(36-35)}](https://tex.z-dn.net/?f=%5Csqrt%7B36%2836-9%29%2836-28%29%2836-35%29%7D)
=![\sqrt{36(27)(8)(1)} \sqrt{36(27)(8)(1)}](https://tex.z-dn.net/?f=%5Csqrt%7B36%2827%29%288%29%281%29%7D)
=![\sqrt{36(9*3)(4*2)} \sqrt{36(9*3)(4*2)}](https://tex.z-dn.net/?f=%5Csqrt%7B36%289%2A3%29%284%2A2%29%7D)
=![\sqrt{6^{2}*3^{2}*2^{2}*3*2 } \sqrt{6^{2}*3^{2}*2^{2}*3*2 }](https://tex.z-dn.net/?f=%5Csqrt%7B6%5E%7B2%7D%2A3%5E%7B2%7D%2A2%5E%7B2%7D%2A3%2A2%20%20%20%7D)
=![\sqrt{6^{2} } *\sqrt{3^{2} } *\sqrt{2^{2} } *\sqrt{3*2} \sqrt{6^{2} } *\sqrt{3^{2} } *\sqrt{2^{2} } *\sqrt{3*2}](https://tex.z-dn.net/?f=%5Csqrt%7B6%5E%7B2%7D%20%7D%20%2A%5Csqrt%7B3%5E%7B2%7D%20%7D%20%2A%5Csqrt%7B2%5E%7B2%7D%20%7D%20%2A%5Csqrt%7B3%2A2%7D)
=![6*3*2\sqrt{6} 6*3*2\sqrt{6}](https://tex.z-dn.net/?f=6%2A3%2A2%5Csqrt%7B6%7D)
=![36\sqrt{6} cm^{2} 36\sqrt{6} cm^{2}](https://tex.z-dn.net/?f=36%5Csqrt%7B6%7D%20cm%5E%7B2%7D)
=![36 * 2.45 cm^{2} 36 * 2.45 cm^{2}](https://tex.z-dn.net/?f=36%20%2A%202.45%20cm%5E%7B2%7D)
=![88.2cm^{2} 88.2cm^{2}](https://tex.z-dn.net/?f=88.2cm%5E%7B2%7D)
Area of tiles = 16 * area of 1 triangle ΔABC
=![(16 * 88.2)cm^{2} (16 * 88.2)cm^{2}](https://tex.z-dn.net/?f=%2816%20%2A%2088.2%29cm%5E%7B2%7D)
=![1411.2cm^{2} 1411.2cm^{2}](https://tex.z-dn.net/?f=1411.2cm%5E%7B2%7D)
Cost of polishing per centimetre square are is 50p
Cost of polishing
area = Rs. ![(1411.2*\frac{1}{2}) (1411.2*\frac{1}{2})](https://tex.z-dn.net/?f=%281411.2%2A%5Cfrac%7B1%7D%7B2%7D%29)
= Rs.![705.60 705.60](https://tex.z-dn.net/?f=705.60)
Therefore, it will cost Rs.
while polishing all the tiles.
Hope it helps you buddy!!!
Step-by-step explanation:
Hope.....It Helps....