Help please!! Will mark as brainlist only with an explanation

F: 48

Step-by-step explanation:

Let x be the length of the side of the cube. RQ can be expressed as a triangle consisting of a diagonal of a face of the cube and the side length x. By the pythagorean theorem, we know that a^2+b^2=c^2. So, we can express the diagonal as x^2+x^2=c^2, giving us the value of c to be . Now, we can once again use the pythagorean theorem to find RQ^2=2x^2+x^2=3x^2, so RQ==12, so x=. To find the area of the shaded part, we multiply the length times width which gives us . So, the area of the shaded face of the cube is F: 48.

it would be:

c.parallelogram.

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5