Question

d2=20cm area of rhombus =400cm2 find d1

Answer 1

Answer:

The diagonal ( D1) = 40cm

Step-by-step Explanations :

Given : Area of Rhombus = 400 cm²

Diagonal (D2) = 20 cm

To find : Diagonal (D1) = ?

We know that,

Area of Rhombus = 1/2 × ( D1 × D2 )

Substituting the given value in above formula we get,

400 = 1/2 × ( D1 × 20 )

400 × 2 = 20D1

800 = 20D1

D1 = 800/20

D1 = 40

Hence the diagonal ( D1) = 40cm

Answer 2

Answer:

given,

area of rhombus = 400 cm²

d2= 20 cm

to find,

d1

A.T.Q.,

area of rhombus= 1/2 × d1 × d2

400 cm² = 1/2 × d1 × 20

400 ÷ 20 = 1/2 × d1

20 = 1/2 × d1

20 × 2 = d1

40 cm = d1 (answer)