Contact us
Choose a category below so we can get back to you as quickly as possible.
設兩直角邊分別為2a、a,∵斜邊長為10cm,∴兩直角邊平方和為(2a)2+a2=102,解得a2=20,所以這個直角三角形的面積為S=2a•a÷2=20cm2.故答案為:20cm2.
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.