一个蛋糕盒(如图)①蛋糕盒的体积是多少立方厘米?②用彩带包扎至少需要彩带多少厘米?(打结处大约用20

2025-03-17 12:01:26
推荐回答(1个)
回答1:

(1)3.14×(30÷2) 2 ×15,
=3.14×225×15,
=706.5×15,
=10597.5(立方厘米);
答:蛋糕盒的体积是10597.5立方厘米.

(2)30×4+15×4+20,
=120+60+20,
=200(厘米);
答:至少需要彩带200厘米.