Respuesta :

irspow

Answer:

Step-by-step explanation:

The area of a triangle is

A=bh/2 where b=base dimension and h=height

1) 10(12)/2=60mm^2

2) 14(34)/2=238in^2

3) 9.5(19.25)/2=91.4375yd^2

4) 4.9(23.7)/2=232.26m^2

5) 285=15b/2, 15b=578, b=38ft

6) 17h/2=18.7, 17h=37.4, h=2.2cm

7) 12.25b/2=128.625, 12.25b=257.25, b=21in
So basically use a calculator to do 12x10 and do that for all of them so you can get what you need for the area