Mario made this model find the product of a 3-digit number and an al-digit number 400
80 2
8
What multiplication equation represents Mario's model?
8 x 402=3216
8x428=3.424
8 x 480=3840
8x482=3.856

In the first triangle 80+20+p=180 (since sum of all angles of a triangle is 180)so p= 80also in second triangle 55+45+q=180 (since sum of all angles of a triangle is 180)so q=80so we can conclude that p=80 degrees q=80 degrees so p=q=80 degreeshence option b is correct

The lateral side of a triangular pyramid is a triangle. in order to increase the lateral surface area, the slant height and the height should be altered

Letter c so sorry if i’m wrong ):