Question

A school ground is in the shape of a circle with radius 103m four tracks each of 3m wide as to be construed inside the ground for the purpose of tracks event find the cost of constructing the track at the rate of €50 per square​ . Meter

Answer 1

the cost of constructing the track at the rate of €50 per square is 365496 €

Step-by-step explanation:

Radius of the school ground = 103 m

Width of one track = 3m

Width of 4 tracks = $3\times 4=12$ m

The inner Radius of the school ground

$=103-12$

$=91$ m

The area of the circular track

$=\pi\times 103^2-\pi\times 91^2$

$=\pi(103^2-91^2)$

$=3.14\times (103+91)(103-91)$

$=3.14\times 194\times 12$

$=7309.92$ m²

Cost of constructing the track @ 50€ per m²

$=7309.92\times 50$ €

$=365496$ €

Hope this answer is helpful.

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