Basically, choosing one red marble out of everything is 3 / 10 because there are 3 chances of picking the red marble and 10 marbles overall. Picking one blue marble would be 6 / 10, or 3 / 5. You would multiply these two probabilities together because they are independent of each other:
(3 / 10)*(3 / 5) = 9 / 50
The probability is 9 / 50.
angle BCA should be the same as angle CAD -> 20°
Answer:
As Per Provided Information
- Length of diagonal of square is 4√2 cm
We have been asked to find the length , perimeter and area of square .
First let's calculate the side of square .
Using Formulae

On substituting the value in above formula we obtain

<u>Therefore</u><u>,</u>
- <u>Length </u><u>of </u><u>its </u><u>side </u><u>is </u><u>4</u><u> </u><u>cm</u><u>.</u>
Finding the perimeter of square.

Substituting the value we obtain

<u>Therefore</u><u>,</u>
- <u>Perimeter </u><u>of </u><u>square </u><u>is </u><u>1</u><u>6</u><u> </u><u>cm </u><u>.</u>
Finding the area of square .

Substituting the value we get

<u>Therefore</u><u>,</u>
- <u>Area </u><u>of</u><u> </u><u>square</u><u> </u><u>is </u><u>1</u><u>6</u><u> </u><u>cm²</u><u>.</u>
The answer is c.
Since a^2+b^2=c^2, b^2=c^2-a^2 thus,
16=4-b^2= srt. of 12