Question

400cm= 1/2 × x cm ×2x cm find the value of x​

Answer 1

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Answer 2

Answer: x value is 20

Step-by-step explanation:

Given,

400cm= 1/2 × x cm ×2x cm

We have to find the value of x​

400cm= 1/2 × x cm ×2x cm

400cm= 1/2 ×2x^2 cm

400cm= x^2 cm

Find square root of 400

x=√400

x=20

To check putting x=20

= 1/2 × 20 cm ×(2*20) cm

=10*40

=400cm

Hence, we get the solution x value is 20