Question

If T = pi (R²-r²),
find t when R=4
and r=3
​

Answer 1

T = 21.98

Explanation:

T = pi (R²-r²)

T = 3.14 x (4² - 3²) = 3.14 x (16 - 9) = 3.14 x 7 = 21.98