HELP ANSWER BOTH PLEASE (╥﹏╥)

a.) 61 square feet

b.) $152.50

Step-by-step explanation:

first you find the area for the rectangle

LxW=A

10x4=40

then you find the area for the triangle

(bxh)1/2=a

(6x7)1/2=21

-we get 7 from adding the height that we know (3ft) and using logic, a rectangle has equal parallel lines so the dotted line has to equal 4ft. so 3ft+4ft=7ft

then you add both areas together

40 square feet+21 square feet= 61 square feet

Now for B.)

as we know, the area of the room floor is 61sq feet. so by multiplying 2.5 and 61 you get the cost as $152.50

i would need to see the dot plot : )