Question

a triangle hoarding of dimension 11m, 6m, 15. us used for commercial activities. The hoarding yield an earning of rs 5000 perm2 per month. Calculate total earning by the hoarding in a month.

Answer 1

your answer is here

Answer 2

Total earning by the hoarding in a month is Rs. 141421.35.

Step-by-step explanation:

Given : A triangle hoarding of dimension 11m, 6m, 15m used for commercial activities. The hoarding yield an earning of rs 5000 per m² per month.

To find : Calculate total earning by the hoarding in a month ?

Solution :

First we find the area of triangle using heron's formula,

$A=\sqrt{s(s-a)(s-b)(s-c)}$

Where, s is the semi perimeter $s=\frac{a+b+c}{2}$

Here, a=11, b=6, c=15

Substitute the values,

$s=\frac{11+6+15}{2}$

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

$s=16$

The area is given by,

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

$A=\sqrt{16(5)(10)(1)}$

$A=\sqrt{2\times 2\times 2\times 2\times 5\times 2\times 5}$

$A=20\sqrt2\ cm^2$

The hoarding yield an earning of Rs.5000 per m² per month.

Total earning by the hoarding in a month is

$T=20\sqrt2\times 5000$

$T=100000\sqrt2$

Therefore, Total earning by the hoarding in a month is Rs. 141421.35.

#Learn more

Raj earns Rs 25000 per month and saves Rs 5000 per month find the ratio of earnings to savings ​

https://brainly.in/question/8624425