(3.14×7.42+2.58×3.14)÷(3.25+3.14-31/4).
问题描述:
(3.14×7.42+2.58×3.14)÷(3.25+3.14-3
). 1 4
答
(3.14×7.42+2.58×3.14)÷(3.25+3.14-3
),1 4
=(7.42+2.58)×3.14÷(3.25-3
+3.14),1 4
=10×3.14÷3.14,
=31.4÷3.14,
=10.