Answer:
216cm^2
Step-by-step explanation:
I can't calculate the area of the the bottom part if I don't know the length of the smallest side. But, assuming that bottom part is a square:
Multiply 18cm by 10cm:
18 x 10 = 180cm^2
So we have the area of the biggest/top part: 180cm^2
The bottom part, again, I can't calculate it without either knowing the length of the very bottom side, or knowing the length of the smallest side (call it x) of the entire shape, so I could then calculate:
10 - x
6 * x = y cm^2
But assuming the bottom shape makes a perfect square, then:
We know the length of the biggest side: 24cm. And we know the length of the opposite side: 18cm. So, to find the length of the bottom shape/perfect square, you subtract 18 from 24
24 - 18 = 6
6^2 = 36
36cm^2
Add these areas together to give total area:
180cm^2 + 36cm^2 = 216cm^2
