Contact us
Choose a category below so we can get back to you as quickly as possible.
∵a+b+c=60cm,a:b:c=3:4:5,∴a=15cm,b=20cm,c=25cm.∵152+202=252,∴△ABC是直角三角形.∴△ABC的面積為:12×15×20=150.
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.