Question

Help please help ,,,,,

Answer 1

18 cm²

Explanation:

The area labelled A is a triangle.

The area (A) of a triangle is calculated using the formula

A =
`(1)/(2)` bh ( b is the base and h the height )

here b = 9 and h = 4 ( the same height as the rectangle ), thus

A =
`(1)/(2)` × 9 × 4 =
`(1)/(2)` × 36 = 18 cm²