All sides are the same, hence, all three angles are the same, and each one of them is 60 degrees. Due to that:
7x + 4 = 60
7x = 56
x = 56/7 = 8
8y + 12 = 60
8y = 48
y = 48/8 = 6
A because the formula is s^2h/3 and if you plug it in, it's A.
D.) 15/6
- 3 times 52 = 156, and since you can't exactly convert it to a fraction then i'm assuming that it is 'D'.
- Ouma :>