Question

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Answer 1

Test phythagorous theorem,

3^2+4^2=5^2

9+16=25

25=25

=) B=90°

Area=1/2×4×3

=6units

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Answer 2

Answer:

Angle B = 90°

Step-by-step explanation:

AB = 3 units

BC = 4 units

AC = 5 units

Hence, AC is the longest side

AC^2 = AB^2 + BC^2

5^2 = 3^2 + 4^2

25 = 9 + 16

25 = 25

This satisfies the Pythagoras theorem.

Therefore, angle B is equal to 90°

Now,

Area of the ∆ABC = 1/2 × base × height

Area of the ∆ABC = 1/2 × 4 × 3

Area of the ∆ABC = 6 sq. units

HOPE IT HELPS !!!

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