Question

rs=（b+8）cm and pq=（b+2）cm. The area of the triangle is 36cm2. find the b​

Answer 1

Area of triangle PRS =

Area of triangle PQS - Area of triangle PQR

36 = (1/2×QS×PQ) - (1/2×QR×PQ)

36= (1/2×PQ)(QS -QR)

72 = (PQ)(RS)

72 = (b+2)(b+8)

b^2 + 10b - 56 = 0

b= 4 , -14

side can't be negative so b= 4