Find the perimeter of a triangle with sides 7 cm, 9 cm, 12 cm.
A20 cm
B21 cm
C28 cmCORRECT
D30 cm
WAECMathematics
AI
Toaster Teacher
Why the answer is C, and why the others tempt you.
Perimeter = sum of sides = 7 + 9 + 12 = 28 cm.
Want this in Pidgin, Yoruba, Igbo or Hausa? Sign up free →
Practice more Mathematics questions
WAEC Mathematics has thousands more questions like this — with Worked answers on every one.