Question

Find the cost of fencing a triangular garden with sides 20 m, 25 m and 5000 cm, if the cost of
fencing is 20 per m.
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Answer 1

GIVEN:

• The sides of the triangular garden = 20 m, 25m and 5000 cm
• Cost of fencing = Rs. 20 per metre

TO FIND:

• What is the cost of fencing of the triangular garden ?

SOLUTION:

We have given that, a triangular garden with sides 20 m, 25 m and 5000 cm

Firstly,

convert 5000 cm into m

➝ 100 cm = 1 m

➝ 5000 cm = $\sf{\cancel\dfrac{ 5000}{100}}$

➝ 50 m

We know that, the formula for finding the perimeter of triangular garden is:-

$\large\bf{\star \: Perimeter = (Side + side + side)\: \star}$

According to question:-

On putting the values in the formula, we get

$\rm{\dashrightarrow Perimeter = (20 + 25 + 50) \: m }$

$\bf{\dashrightarrow \star \: Perimeter = 95 \: m \: \star}$

⁂ If the cost of fencing of triangular garden is Rs. 20 per m

$\rm{\dashrightarrow 1 \: m = Rs. \: 20}$

$\rm{\dashrightarrow 95 \: m = 20 \times 95 }$

$\bf{\dashrightarrow \star \: 95 \: m = Rs. \: 1900 \: \star}$

❝ Hence, the cost of fencing of triangular garden is Rs. 1900 ❞

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