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trasher [3.6K]
4 years ago
13

A border for a decorative mirror is made with 20 triangular tiles. Each tile has a base of 0.5 cm and a height of 3 cm. What is

the
total area of the border?
O
0.75 cm?
1.5 cm?
15 cm
30 cm?

Mathematics
1 answer:
wariber [46]4 years ago
8 0

Answer:

15 square cm

Step-by-step explanation:

Area of triangle A = 1/2 × b× h

b = 0.5cm and h = 3cm

: A = 1/2 × 0.5 × 3

So for 20 triangle tiles

Total area = 1/2 × 0.5 × 3 × 20

= 15 square cm

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