Current location - Training Enrollment Network - Mathematics courses - Hunan junior high school mathematics examination paper
Hunan junior high school mathematics examination paper
(10-2) ÷ 2 = 4cm

Let the radius be r.

r & ampsup2= 4 & ampsup2+(r-2)& amp； sup2

r & ampsup2= 16+r & amp； sup2-4r+4

4r=20

r=5

5×2= 10 cm

Answer: diameter 10 cm.

Related articles
  • Math problems in primary schools (see writing numbers)
  • The first prize of excellent junior middle school mathematics lecture notes.
  • Answers to Anhui Elementary School Mathematics Preview Course
  • How did the course "China Ancient Landscape Painting" become interesting? Help! ! !
  • 20 10 fill in the blanks at the end of Shanghai college entrance examination in science and mathematics.
  • The seventh grade second volume mathematics inequality courseware.
  • How to treat Chinese, Mathematics and English in Shanghai Spring Examination?
  • About the math teacher
  • The schools in Heping District are ranked evenly.
  • Mathematics Notes (H) General Attack

    • copyright 2024 Training Enrollment Network All rights reserved