Question

the inner circumference of track is 880m the width is 14m find the cost of the constructing track

Answer 1

Answer:

Find an answer to your question The inner circumference of a circular track is 880m and track is 28m wide calculate cost ...

6 votes

inner circumference=880m 2πr=880 r= 880*7/22*2 r=140 mradius of outer circle= R =28+ 140= 168 m.Area of track = area of outer circle -Area of inner ..

Step-by-step explanation:

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Answer 2

$\huge\fbox\pink{✯Answer✯}$

$\huge\fbox\pink{✯refer the attachment✯}$

$\small\fbox\blue{inner circumference=880m✯}$

• 2πr=880

r= 880×7/22×2

r=140 m

$\small\boxed{\dag\sf\red{radius- -of-outer-circle=R=28+140= 168m.}\dag}$

• Area of track = area of outer circles-Area of inner circle

• ✯=π(R²-r²)

=22/7{ (168)² -(140)²}

=22/7(28224-19600)

=22/7(8624)

=27104m²

• Then the cost of lavelling
• = Rs.0.5×27104m²

• =Rs 13552.0

$\huge\fbox\pink{✯Rs=13552.0✯}$

$\huge\boxed{\dag\sf\red{Thanks}\dag}$