can someone answer this. If approximately 70% of the world surface area of 510 million km2 is covered by water what area is land
2007-02-21 17:35:04 · 7 answers · asked by grderik 3 in Science & Mathematics ➔ Earth Sciences & Geology
Hi. 510 x 0.3
2007-02-21 17:38:06 · answer #1 · answered by Cirric 7 · 0⤊ 0⤋
If 70% is water, then 30% is land. You have the total surface area already, so figure out what 7/10 and 3/10 of that area is.
2007-02-22 01:40:12 · answer #2 · answered by arbiter007 6 · 0⤊ 0⤋
Yes, you need to take the 510 and DIVIDE NOT MULTIPLY it by 0.7 or the 70 %. It is backwards from FINDING 70% of something my multiplying that 100% number by the 0.7 you get the 70 % of something. So, you divide instead. And to check your answer, multiply it by the 0.7 (getting the 70 % all over again) and you should get about 510.
Hope that helps
Michael
2007-02-22 01:44:22 · answer #3 · answered by MICHAEL C 2 · 0⤊ 0⤋
so that leaves 30% of the world is land take the 510 and find about 20% of that and it should give u a good guess at what is land....im not that great at math but thats how i would do it
2007-02-22 01:39:47 · answer #4 · answered by Adele.S 4 · 0⤊ 0⤋
153 million km2
2007-02-22 01:38:31 · answer #5 · answered by Trumptonboy 4 · 0⤊ 0⤋
30%
2007-02-22 02:28:07 · answer #6 · answered by Wattsup! 3 · 0⤊ 0⤋
510/.7=(?)X3=ans.
2007-02-26 00:57:34 · answer #7 · answered by puddog57 4 · 0⤊ 0⤋