Question

Plz answer this ---------------------->

Answer 1

Answer:

use herons formula

Step-by-step explanation:

Answer 2

Triangle A

7/2 + 4 3/5 + 4 2/3

7/2 + 23/5 + 14/3

LCM =30

(105+138+140)/30

= 383/30

= 12 23/30 cm

Triangle B

3 1/4 + 7 1/2 + 2 1/4

13/4 + 15/2 + 9/4

LCM=4

(13+30+9)/4

= 52/4

= 13 cm

Triangle B has greater perimeter

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