Question

each side of equilateral triangle measures 20cm then, semiperimeter of triangle______.

(A) 20cm
(B) 30cm
(C) 40cm
(60)60cm​

Answer 1

Answer:

(B) 30 cm

Step-by-step explanation:

semi perimeter, s = a+b+c/2

here, a= b= c= 20

therefore, s= (20+20+20)/2

s=60/2

s=30 cm