## If the sides of a triangle are 8 cm, 10 cm and 12 cm, then it area is (a)15√7cm^2 (b) 5√7cm^2 (c) √7cm^2 (d) 10√7cm^2

Question

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## Answers ( )

Answer:lolll

Step-by-step explanation:please mark me as a brainlist

Answer:answer is B) 563−−√sq cm

Description for Correct answer:

Given that,

a=8cm, b = 10 cm and c=12cm

We know, that

s = a+b+c2 = 8+10+122

= 302=15cm

(s-a)=(15-8)=7cm

(s-b)=(15-10)=5cm

(s-c)=(15-12)=3cm

Area = s(s−a)(s−b)(s−c)−−−−−−−−−−−−−−−−−√

= 15×7×5×3−−−−−−−−−−−√= 1575−−−−√= 25×63−−−−−−√

= 563−−√sq cm.