Question

2 pi (7) squared + 2 pi (7) squared (8) squared

Answer 1

2π(7)^2 + 2π(7)^2(8)^2
=2π(49) + 2π(49)(64)
=98π + 3136π
=3234π

Answer 2

2 x 3.14 x 49 + 2 x 3.14 x 49 x 64

Answer 3

2 x 3.14 x 49 + 2 x 3.14 x 49 x 64
= 2 x 3.14 x 49 x (1 + 64)
= 2 x 3.14 x 49 x 65
= 2 x 3.14 x 3185
≈ 19934.6

Answer 4

2 x 3.14 x 7 + 2 x 3.14 x 7 x 8

Answer 5

2 x 3.14 x 7 + 2 x 3.14 x 7 x 8
= 43.96 + 351.68
= 395.64

Therefore, the result is 395.64.

Answer 6

2 x 3.14 x 7 + 2 x 3.14 x 7 x 14

Answer 7

2 x 3.14 x 7 + 2 x 3.14 x 7 x 14
= 43.96 + 87.92
= 131.88

Therefore, the result is 131.88.