Question

Area of the Rhombus is 840 sq.cm.length of one of its diagonal is 42 cm.Find the length of other diagonal and perimeter of the Rhombus​

Answer 1

Answer:

other diagonal =70 CM

Step-by-step explanation:

given =

area of rhombus = 840 sq.cm

length of diagonal 1= 42 cm

length of other diagonal = let d2

area of rhombus = 1/2* d1*d2

840 sq. cm = 1/2*42*d2

840= 12*d2

d2= 840/12

d2= 70 CM

Answer 2

Answer:

Other diagonal= 40cm

Step-by-step explanation:

Given that

Area of Rhombus=840cm

Given one length of diagonal d1=42cm

We find another diagonal d2=?

We know that Area of rhombus=1/2d1×d2

840=1/2×42×d2

840=21×d2

d2=840/21

d2=40cm

therefore length of another diagonal is 40cm