The cover area of a mathematics book is about 310. What's the unit The volume of this mathematics book is about 250. Who should be the unit

The cover area of a mathematics book is about 310. What's the unit The volume of this mathematics book is about 250. Who should be the unit

square centimetre
Cubic centimeter

Tiananmen Square in Beijing is the largest square in the world, with an area of about 400000 square meters______ Hectare

Beijing Tiananmen Square is the largest square in the world, with an area of about 400000 square meters, or 40 hectares

The Palace Museum in Beijing covers an area of 720000 square meters. Is this an approximate number or an accurate number? How many significant figures does it have? How many digits is it accurate?

The Palace Museum is rectangular, 961 meters long from north to south, 753 meters wide from east to west, covering an area of 723633 square meters

The building area of happy community is 854300 square meters. Is 854300 square meters accurate or approximate?

Our teacher told us it was an approximation
Because according to the principle of rounding, 854300 square meters may be an approximation of 854300.1
Two kinds of numbers each account for 50%

The area of a classroom is 50 () a hectare, b square decimeter, C meter, D square meter

D

A classroom area of about 50 square meters, () such classrooms, an area of about 1 hectare
A. 2B. 20C. 200D. 2000

1 hectare = 10000 square meters, 10000 △ 50 = 200, so a classroom of 50 square meters, 200 such classrooms, the area is about 1 hectare

The area of a classroom is 48 square meters, equivalent to how many square kilometers? What's one ten thousandth of his? One millionth of his
In this kind of political organization, it's really true

048 square kilometers, one in ten thousand is 0.0000048 square kilometers, equal to 0.0048 square meters, one millionth is 0.000000048 square kilometers, equal to 0.000048 square meters

How much RMB is a million pounds

GBP 1000000 = RMB 10646225.9129

How many meters is one inch?

1 cm = 0.01 inch
1 inch = 100 cm
1 meter = 3 feet = 30 inches = 3000 cm inches
1 inch = 1 / 3000 meters

How many millions is 100 million?

100 million