Question

the area of rhombus is 69cm and one of its diagonal is 8cm find the other diagonal.

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Answer 1

Answer:

area of rhombus=1/2.d1.d2

Step-by-step explanation:69=1/2.8.d2

138/8=d2

69/4=d2

17.25=d2

Answer 2

Answer:

17.25 cm

Step-by-step explanation:

Area of the rhombus = 1/2 ( Diagonal 1 x Diagonal 2)

Define x:

Let D be the unknown diagonal.

Find the area of the rhombus in term of D:

Area = 1/2 ( Diagonal 1 x Diagonal 2)

Area = 1/2 ( 8 x D )

Area = 1/2 (8D)

Area = 4D

Solve D:

Area = 4D

Area = 69 cm

4D = 69

D = 69 ÷ 4 = 17.25 cm