Answer:
= 28.5cm²
Explanation:
A is a full diamond which is equal to 3cm²
B has: 7 full diamonds and five 1/2 diamonds
Five 1/2 diamonds = 2 full diamonds and 1/2 a diamond.
If 1 diamond(A) = 3cm²
What about 9 diamonds = ?
= (9 × 3) ÷1
= 27cm²
If 1 diamond(A) = 3cm²
What about 1/2 a diamond = ?
= 1/2 × 3
= 1.5cm²
Total = 27 + 1.5
= 28.5cm²