Question

please tell :()))))))))​

Answer 1

Answer:

c)375√7

Step-by-step explanation:

use heron's method and solve

Answer 2

Step-by-step explanation:

we need to solve this using herons formula

$area \: = \sqrt{s(s - a)(s - b)(s - c)} \\ s = \frac{a + b + c}{2} \\ a \: b \: c \: are \: the \: sides \: of \: triangle \\ s = \frac{40 + 50 + 60}{2} = \frac{150}{2} = 75 \\ area = \sqrt{75(75 - 40)(75 - 50)(75 - 60)} \\ = \sqrt{75 \times 35 \times 25 \times 15} \\ = \sqrt{3 \times 5 \times 5 \times 5 \times 7 \times 5 \times 5 \times 3 \times 5} \\ = \sqrt{ {3}^{2} \times {5}^{6} \times 7 } \\ = 3 \times {5}^{3} \times \sqrt{7} \\ = 3 \times 125 \times \sqrt{7} \\ = 375 \sqrt{7}$

therefore the answer is c) 375√7

hope you get your answer