Question

A-14 b-18 c-10 herons formula

Answer 1

Step-by-step explanation:

herons formula=

$\sqrt{s(s - a)(s - b)(s - c)}$

s=

$a + b + c \div 2$

substituting values

s=14+18+10/2

s=42/2

s=21

Area=

$\sqrt{21(21 - 14)(21 - 18)(21 - 10)}$

=

$\sqrt{21 \times 7 \times 3 \times 11}$

A=√4851

A=69.64cm^2