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Hunter-Best [27]
2 years ago
14

A shape is made of 12 right triangles of equal size. Each right triangle has a base of 4cm and a height of 5cm. What is the tota

l area, is square centimeters, of the shape?
Mathematics
1 answer:
Natalka [10]2 years ago
6 0

Answer: 120 cm²

Step-by-step explanation:

Let's start by finding the area of one triangle

The formula for finding the area of a triangle is A=\frac{hb}{2}

Where

A is the area

h is the height (5 for this)

and b is the base (4 for this)

Let's sub in our values and solve.

A=\frac{(5)(4)}{2}\\A=\frac{20}{2}\\A=10

Since there are 12 triangles in the shape we must multiply our area for one triangle by 12 to find the total area of the shape

12×10=120

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