Question

There is a slide in a park one of its side walls has been painted in some colour with message . If sides of the wall are 15m,11m 6m find the area

Answer 1

Answer:

15x11x6=990m2

Step-by-step explanation:

15x11x6=990m2

Answer 2

Q. There is a slide in a park. one of its side walls has been painted is some colour with a massage ''keep the park clean'' if the sides of the wall are 15m. 11m. and 6m find the area painted in colour.

$\huge{\underline{\tt{\green{Solution-}}}}$

Given: $\sf{a = 11m}$

$\sf{b = 15m}$

$\sf{c = 6m}$

To find: Area of the painted in colour.

$\longrightarrow \sf{2s = a+b+c}$

$\longrightarrow \sf{s = \frac{ a+b+c}{2}}$

$\longrightarrow \sf{s = \frac{32}{2}}$

$\longrightarrow \sf\blue{16m}$

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$\longrightarrow \sf\blue{Area\:of\:Triangle=\sqrt{s(s-a) (s-b) (s-c)}}$

$\longrightarrow \sf{=\sqrt{16(16-11) (16-15) (16-6)}}$

$\longrightarrow \sf{=\sqrt{16\times5\times1\times10}}$

$\longrightarrow \sf{=\sqrt{16\times5\times5\times2}}$

$\longrightarrow \sf{=\sqrt{16\times25\times2}}$

$\longrightarrow \sf{=4\times5\sqrt{2}}$

$\huge\longrightarrow \sf\blue{=20\sqrt{2m}^{2}}$

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