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38 votes
38 votes
Find the area of triangle..​

Find the area of triangle..​-example-1
User Moettinger
by
2.6k points

2 Answers

8 votes
8 votes

Answer:

Explanation:

AB=BC=AC=4√2

Height AD=√[(4√2)²-(2√2)²]=√(32-16)=√16=4

Area=1/2 ×4√2×4=8√2 cm²

User Warif Akhand Rishi
by
2.7k points
12 votes
12 votes

Answer:

13.8564 square cm

Explanation:

This is an equilateral triangle whose area is given by
(\sqrt3)/(4) a^2 where a is the length of each side

Since a = 4√2 cm

a² = (4√2)² = 4² (√2)² = 16(√2)² cm²
(√2)² = 2

So a² =(16)2 = 32 cm²

Area = (√3) (32/4) = (√3)(8) ≈ 13.8564 square cm

User Spencer Cooley
by
2.5k points