3. I spent 40p on a comic, which was 1/3 of my pocket
money. How much have I got left?​

12.081

Step-by-step explanation:

Primero debes saber la cantidad de dinero que tenías, por lo tanto haces una regla de 3.

400,33%

?100%

40*100=4.000

4.000/0,33= 12.121

Ahora que ya sabes cuánto tenías le restas 40 porque te pregunta que cuanto te queda, entonces  

12.121-40=12.081

a net is a diagram that shows a “flattened” view of a solid. in a net, each face and base is shown with all of its dimensions. a net can also serve as a pattern to build a three-dimensional solid.

a pyramid is a three-dimensional object with a base that is a polygon and triangular faces that meet at one vertex.

" the net of a triangular pyramid consists of four triangles. the base here we are given of the pyramid is a equilateral   triangle, and the lateral faces are also triangles "

687.09 dollars       happy now

step-by-step explanation: 6870

1857 times .63 equals 1169.91 subtract that from 1857 you get 687.09