Find the area of the shaded region;me out this is for my final and idk how to do it.. 20 points ignore my work if you need too!

Area of a sector of a circle is A = (centralangle/360)*pi*r²
so the area of the sector is

A = (90/360)*pi*6^2 = 9pi m²

area of the triangle is 1/2*b*h = 1/2*6*6 = 18 m²

area of shaded region is the area of the sector minus the area of triangle

so (9pi - 18) m² or approximately 10.274 m²

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

4should be the last one n=4