求以下English數學ge答案 ( 10+

1.
The estate 'll have twelve 36-storey buildings with 18 units on each floor.According to the Census,we can estimate the average number of inhabitiants in each unit to be5.23 .Find the number of inhabitians this esate 'll have ,round off the answer correct to the nearest 10 thousand.

2.
ben has a piece of rectangular builfing block and a piece of cubic building block.the rectangular block has length4.5cm and breadth 4 cm while each side of cubic block is 3 cm. It's given that volumes of 2 building blocks are the same.find the hieght of the rectangular block .