Question

In quadrilateral field ABCD angle B = 90degree AB = 80 m BC = 150 m CD = 120 m and da = 250 m . find the area of the field in hectares. find the pricr of the field if its costs rupees 12,000 / hectare. using herons formula​

Answer 1

You will get the area of quadrilateral ABCD

r:Let ABCD is a quadrilateral in which AB =9m , BC= 40 m , CD=15m and DA=28m

join , AC

now in triangle ABC ,as angle B =90°

therefore , ar.(∆ABC) =1/2 *9*40

ar. (∆ABC) =180°

Now by Pythagoras theorem

(AC)^2 = (AB)^2+(BC)^2

(AC)^2 = (9)^2+(40)^2

(AC)^2 = 81 + 1600

AC = √1681

AC =41

Now find the area of triangle ADC by heron's formula and add the area of triangle ABC to it

Step-by-step explanation: