六年级英语44页课文朗读
六年级数学下册一课一练第42—44页答案5个回答2022-07-23 22:09
设:正方形边长为a;对角线长度为D;圆的面积是S
解:
∵D²=2×a²=2×10(勾股定律)
∴D=√20
S=π(√20/2)²
=5π
=5×3.14
=15.7(平方厘米)
六年级下册英语课本第34页听力1个回答2024-06-29 04:11
what did you do last weekend
I played football.
Did you read books
yes,I did.
No,I didn't.
where did you go your holiday
I went to Xinjiang.
How did you go there
I went by train.
六1班44名同学1个回答2024-02-26 22:36
(1):0张、44张、880元
(2):4张、4张、680元
(3):5张、0张、750元