Question

Please tell me these three questions of heron’s formula

Answer 1

Answer:

s = a+b+c/2 = 50+65+65/2 = 90

Area =

$\sqrt{s \times s - a \times s - b \times s - c}$

$\sqrt{90 \times 40 \times 25 \times 25}$

= 60 x 25

= 1500m^2

cost per m^2 = ₹7

cost of 1500 m^2 = ₹1500 x 7 = ₹10500

I can't answer others yet, I am busy sorry but I answered this first one in the few time I had. Hope you liked this one. Same formula will be used in other 2 also but you also need to do other steps in them. sorry.

Answer 2

Please mark me as brainiest