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A block measure 22 cm by 11 cm by 7 cm. How many of these blocks will be needed to build a wall 5 1/2m long, 22 cm thick and 3 1/2 m high? ​
answered Sep 12, 2021
6 votes
147k views
What is the correct definition of density
answered Jul 24, 2021
3 votes
55.8k views
What is the minimum level of protein structure for an enzyme?
answered Jun 8, 2021
7 votes
66.8k views
What is the area of this circle?
answered Feb 7, 2021
1 vote
144k views
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