Can someone can help me

Answers:

1)

2)

Step-by-step explanation:

1)The surface are of this square pyramid is the area of the triangle multiplied by 4 (since there are 4 triangles) plus the area of the square:

(1)

Now, the area of a triangle is given by:

(2)

Where:

is the base

is the height

(3)

The area of a square is:

(4)

Where is the length of each side of the square

(5)

Then, substituting (3) and (5) in (1):

(6)

(7)

2) The surface area of a cube is:

(8)

Where is the length of each edge

Then:

(9)

(10)

step-by-step explanation:

5×5×5+2(8)÷2(2)+3(3)

15+16÷4+9

31÷13

do 31÷13 and u will get ur answer

answer: i'm not sure

step-by-step explanation: