Answer:
18617.66 ft^2
Step-by-step explanation:
sides of triangular base
a= 145ft ,
b = 257ft ,
c = 290ft
<u>calculate the area of the base </u>
The base is a scalene triangle hence the area is calculated as follows
s = ( a + b + c ) / 2
= ( 145 + 257 + 290 ) / 2 = 346
Area of triangle =
= 18617.66 ft^2
178
area of big rectangle : 143
area of small rectangle:20
area of triangle : 15
143+20+15= 178
yesss they are
8.34375 Round it to the nearest Hundred
22.25×9 = 200.25 ÷24= 8.34375
4in