Question

Please help! Will give branliest for correct answer ! God Bless uu!!

Answer 1

Answer:

$\rm\displaystyle A _{ \text{total}} = 322 {km}^{2}$

Step-by-step explanation:

refer the attachment

we have a triangle,a rectangle and a square

in order to figure out the area of the total figure we need to figure out the area the attached figure first

Triangle:

the triangle has a base of 18 km and a height of 13+6+2=21km

thus,

the area of the triangle is

$\displaystyle \frac{1}{2} \times 18 km\times 21km$

reduce fraction:

$\displaystyle 9 km\times 21km$

simplify multiplication:

$\displaystyle 189 km ^{2}$

Rectangle:

the rectangle has a length of 13km and a width of 4km

thus,

the area of the rectangle is

$\displaystyle 13km \times 4km$

simplify multiplication:

$\displaystyle {52km}^{2}$

Square:

the length of every sides of the square is 9km

thus,

the area of the square is

$\displaystyle {(9km)}^{2}$

simplify square:

$\displaystyle {81km}^{2}$

Area-total:

$\rm\displaystyle A _{ \text{total}} = A_{ \text{triangle}} + A_{ \text{rectangle}} + A_{ \text{square}}$

substitute:

$\rm\displaystyle A _{ \text{total}} = 189 {km}^{2} + 52 {km}^{2} + 81 {km}^{2}$

simplify addition:

$\rm\displaystyle A _{ \text{total}} = 322 {km}^{2}$

Answer 2

Answer:

solution given:

Area of triangle ABC=½b×h=½×18×21=189km²

Area of square DEFG=l²=9²=81km²

Area of rectangle DHIJ=l×b=4×13=52km²

Total area =189+81+52=322 square kilometers.