1. the length of a diagonal of a square is 10√2. Find the perimeter and area of the square.
2. two aeroplanes left the same airport at the same time.One flew 900km north and the other 1200km east. how far apart are they now?
3.a ladder 3m long reaches 2m up the side of a building. how far from the base of the building is the foot of the ladder?
maths question
2009-03-09 4:10 am
回答 (2)
2009-03-09 4:24 am
✔ 最佳答案
1:The perimeter of the square is 10√2X4=40√2The area of the square is (10√2)^2=200
2:By Pyth. Theorem..√[(1200)^2+(900)^2]=1500Km
3:Also by pyth. theorem, √(3^2-2^2)=√5m
Hope can help you¬
2009-03-09 4:22 am
1) perimeter = 40
2) distance = 1500km
3) √5
2) distance = 1500km
3) √5
收錄日期: 2021-04-15 19:06:03
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