Irrational Number pi

Precalculus
David Cohen
Edition 3
Chapter 1, Section 1.1

The value of the irrational number pi, correct to ten decimal places (without rounding), is 3.1415926535. By using a calculator, determine to how many decimal places each of the following quantities agrees with pi.

61A. (4/3)^4

61B. 22/7

61C. 355/113

61D. (63/25)[(17 + 15•sqrt{5})]/[(7 + 15•sqrt{5})]