Question

12. A rectangular picture frame is 40 cm by 30 cm. Find its diagonal.
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Answer 1

Given:

Length = 40 cm

Breadth = 30 cm

To Find:

The measure of it's diagonal.

Pythagoras Theorem:

AB^2 + BC^2 = AC^2

Step-By-Step Explanation:

By putting the values, we get

√(40)^2 + (30)^2 = Length of the diagonal

or, √1600 + 900 = Length of the diagonal

or, √2500 = Length of the diagonal

or, 50 cm = Length of the diagonal

Answer:

The length of the diagonal is 50 cm .

Answer 2

Answer:

Given:

Length = 40 cm

Breadth = 30 cm

To Find:

The measure of it's diagonal.

Pythagoras Theorem:

AB^2 + BC^2 = AC^2

Step-By-Step Explanation:

By putting the values, we get

√(40)^2 + (30)^2 = Length of the diagonal

or, √1600 + 900 = Length of the diagonal

or, √2500 = Length of the diagonal

or, 50 cm = Length of the diagonal

Answer:

The length of the diagonal is 50 cm .