38.0k views
2 votes
Pleasee hellpp pleaseee help​

Pleasee hellpp pleaseee help​-example-1
User Revdrjrr
by
8.2k points

1 Answer

2 votes

Answer:

5 cm and 12 cm

Explanation:

Calculate the unknown side h using Pythagoras' identity.

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

h² = 3² + 4² = 9 + 16 = 25 ( take the square root of both sides )

h =
√(25) = 5 cm

The perimeter is the sum of the 3 sides, thus

perimeter = 3 + 4 + 5 = 12 cm

User One
by
7.8k points

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