In a right rectangles pyramid with base edges a= 18 cm and b= 10 cm the slant height toward a is k= 13 cm while the slant height towards b is l= 15 cm. what is the surface area of the pyramid

To find the surface area of this pier amid, you will find the area of the base and the areas of all for triangular lateral faces. Add these together for the total surface area in the end.

Base : 18 x 10 = 180 cm²

1st set of lateral faces:

A = 1/2 x b x h
1/2 x 13 x 18
A = 117 cm² x 2
234 cm²

2nd set of lateral faces:

1/2 x 10 x 15
A = 75 cm² x 2
150 cm²

150 cm² +234 cm² +180 cm²

The surface area of the pyramid is 564 cm².