Perimeter, Area And Volume
2 answers:
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
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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