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3 years ago

PLS HELP I NEED TO FIND X!!!

Mathematics

1 answer:

Mashutka [201]3 years ago

5 0

Answer:

x =7.62

Step-by-step explanation:

Using Pythagoras Theorem:

a² + b² = c²

7² + 3² = x²

x² = 49 + 9

x = √58 .......in radical form

x =7.62 .....in 2 decimal form

x = 7.6 ......in nearest tenth place

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3 years ago

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MAXImum [283]

Length of the side = 9 cm

Diagonal = $9\sqrt{2}$ cm

Solution:

Area of the square = 81 square centimeters

In square all sides are equal.

Area of the square = side × side

Side × side = 81

Side² = 9² (∵81 = 9²)

Taking square root on both sides, we get

Side = 9 cm

Length of the side = 9 cm

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In square all the angles are right angle.

Diagonal splits the square into two right angle triangle.

Using Pythagoras theorem,

In right triangle, square of the hypotenuse is equal to the sum of the square of the other two sides.

Here, diagonal is the hypotenuse.

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