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3 years ago

Perimeter, Area And Volume

Mathematics

2 answers:

Lana71 [14]3 years ago

7 0

Answer:

A = 19.663 m^2 Bigger perimeter =395.841 m Smaller perimeter = 364.425m

Step-by-step explanation:

To get the area you take the bigger circle minus the smaller circle

A = ( π × R^2) - (π × r^2)

Then just plug stuff in

A = ( π × 63^2) - ( π × 58^2)

A = 3969π - 3364π

A = 605π

A = 1900.664 (rounded)

Perimeter is just C = 2πr

Bigger ring

C = 126π

C = 395.841 m

Smaller ring

C = 116π

C = 364.425

san4es73 [151]3 years ago

6 0

Answer:

A ≈ 1900.7 m²

Step-by-step explanation:

The area (A) of the race track is

area of outer circle - area of inner circle

= πR² - πr²

= π × 63² - π × 58²

= π (63² - 58² )

= π(3969 - 3364)

= π × 605

≈ 1900.7 m² ( to 1 dec. place )

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Answer:

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Step-by-step explanation:

The correct question is as follows;

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_____
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