Question

The length of one side of an equilateral triangle is 7 cm, then the semiperimeter is _____ cm.
A) 21
B) 10.5
C) 105
D) 7/2

Answer 1

Answer:

B. 10.5

hope this helps you

Answer 2

Answer:

Length of

Step-by-step explanation:

Length of one side is 7 cm

perimeter = 7×3 =21

semi perimeter = 21÷2 =10.5