Question

Pls anyone pls help me in question 7 and 8 please i rlly need help quick

Answer 1

7) ((1/6)(2²) + (1/3)(3²) + (1/8)(5²) + (3/8)(3²))π

= (2/3 + 3 + 25/8 + 27/8)π

= 61π/6

8)

((1/12)(6²) + (1/6)(3²) + (1/9)(2²) + (5/36)(6²))π

= (3 + 3/2 + 4/9 + 5)π

= 179π/18