Answer :

Answer:

1) Area of all the 4 triangles = 96 square centimeters.

2) Area of the square = 36 square centimeters

3) Total surface area of the pyramid = 132 square centimeters

Step-by-step explanation:

base b = 6/2 = 3cm.

height h = 8cm

Area of a triangle = 2 × 1/2bh = bh = 3 × 8 = 24 square centimeters.

Since all the triangles have same area, therefore

1) Area of all the 4 triangles = 4 × 24 = 96 square centimeters

2) Area of the square = length × length = 6 × 6 = 36 square centimeters

3) Total surface area of the pyramid = Area of the 4 triangles + Area of the square = 96 + 36 = 132 square centimeters

Inact

Answer: Question 1 answer

Step-by-step explanation: Question 1:

How to find triangle area: 12 x 8 divided by 2

Which = 48

All 4 triangles all have an area of 48

48 x 4 = 192

The area of the square is 144 because 12 x 12

The pyramids surface Area = 267.26

I am sorry as I do not know how to do the other questions. I could only figure out question 1. I hope you can get your grades up and wish you luck.