Question

Area of triangle with base 31 and height 9 km

Answer 1

Answer:

you can fin with this formula

$\frac{1}{2} \times base \times height$

$i.e. \: \: \: \\ \frac{1}{2} \times 31 \times 9 \\ \\ = \frac{1}{2} \times 279 \\ \\ = 139.5$

Hope this will help you dear

Answer 2

Area of triangle = 1/2 bh
Base(b)=31 km
Height (h)= 9 km
Now, area =1/2 •31•9= 139.5 km2