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3 years ago

If the length and breadth of a rectangle are 10cm and 20cm respectively,find the length of its diagonal

Mathematics

2 answers:

weqwewe [10]3 years ago

6 0

Answer:22.4 cm

Step-by-step explanation:

First draw the rectangle and divide it into two triangles.

Take one triangle out and with the length and breath solve for the hypotenuse using Pythagoras theorem

.: H^2 = 10^2 + 20^2

H^2 = 500

Find the square root of both sides of the equation

H = 22.4 cm = the length of the diagonal

irina [24]3 years ago

5 0

L = 10

B = 20

so to find the diagonal you have to use Pythagorean theorem that is a^2 + b^2 = c^2

10^2 + 20^2 = X^2

X = root of 10^2 + 20^2

X = root of 100 + 400

X = root of 500

X = appox 22.36

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3 years ago

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2 years ago

Write the exact value of the side length of each square. If the value is not a whole number, estimate the length.

Savatey [412]

Given:

The area of the squares are given.

To find:

The exact side length or estimate side length of the square.

Solution:

We know that, the area of a square is

$A=a^2$

Where, a is the side length of the square.

$a=\sqrt{A}$

Area of the square is 100 square units. So, the side length is:

$a=\sqrt{100}$

$a=10$

Therefore, the side length is 10 units.

Area of the square is 95 square units. So, the side length is:

$a=\sqrt{95}$

It is not exact. We know that $\sqrt{81}$ .

Therefore, the side length is between 9 and 10.

Area of the square is 36 square units. So, the side length is:

$a=\sqrt{36}$

$a=6$

Therefore, the side length is 6 units.

Area of the square is 30 square units. So, the side length is:

$a=\sqrt{30}$

It is not exact. We know that $\sqrt{25}$ .

Therefore, the side length is between 5 and 6.

8 0

3 years ago

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labwork [276]

The 2nd one is D I think

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3 years ago

Please help Im confused and I need this to be done ASAP what is the range

il63 [147K]

Answer:

All Real Number greater than 0 or

(0, positive infinity)

Step-by-step explanation:

The range is all possible y values of a function. We can tell a range by looking at the lowest y vaule then going to the highest possible y value.

Look at the graph. There is a open circle at y=0. So this means we are not going to include 0 in our function. The graph approaches f(x) to positive Infinity so our highest y value is Infinity.

So we know that the function y values cannot be zero and it must be positive. So our range is

All Real Number greater than 0. Or

(0, positive infinity)

3 0

2 years ago