将边长为 10 厘米的等边三角形、边长为 10 厘米的正方形和直径为 10 厘米的半圆组合起来。计算这个形状的总面积。(π = 3.142)
嘉联青模拟题目

Quiz
•
Mathematics
•
6th Grade
•
Hard
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14 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
159.671 cm^2
179.526 cm^2
182.565 cm^2
197.402 cm^2
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
将一个边长为 5 厘米的直角三角形、一个直径为 5 厘米的正圆和一个尺寸为 5 厘米 x 10 厘米的矩形组合在一起。求总面积。 (π = 3.142)
82.125 cm^2
87.665 cm^2
93.856 cm^2
106.983 cm^2
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
一块草地每天以均匀的速度生长。它可以在4周内喂养15头牛,或者在8周内喂养12头牛。请问在12周内,这块草地可以喂养多少头牛?
10
11
12
13
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
一片草地的草每天均匀生长。它可以在5周内喂养25头牛,或者在10周内喂养18头牛。12周内这块草地可以喂养多少头牛?
10
15
20
25
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
简化表达式: 3(2x−y)−(x+3y)+4
6x+5y-4
5x-6y+4
6x-5y+4
5x+6y-4
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
简化表达式: 4(2a−3b)+3(a−2b)−5
11a-18b-5
11b+18a+5
18b-11a-5
18a+11b+5
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
简化表达式: 7(x−4y)−3(2x+y)+9
28y+x-9
28x-y+9
y-31x+9
x-31y+9
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