The base of an isosceles right angle triangle is 30 cm.Find its area?
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Hi there!
Given :-
Base = 30 cm
Let the equal sides be individually = x
ATQ,
by Pythagoras theorem :-
=> x² + x² = 30²
=> 2x² = 30²
=> x² = 15 × 30
=> x² = 5 × 3× 3× 5 × 2
=> x² = 5² × 3² × 2
=> x = 5 × 3 × √2 = 15√2 cm
Now,
Area = 1/2 × 15√2 × 15√2
=> 1/2 × 225 × 2 cm
=> 225 cm²
Hope it helps! :)
Given :-
Base = 30 cm
Let the equal sides be individually = x
ATQ,
by Pythagoras theorem :-
=> x² + x² = 30²
=> 2x² = 30²
=> x² = 15 × 30
=> x² = 5 × 3× 3× 5 × 2
=> x² = 5² × 3² × 2
=> x = 5 × 3 × √2 = 15√2 cm
Now,
Area = 1/2 × 15√2 × 15√2
=> 1/2 × 225 × 2 cm
=> 225 cm²
Hope it helps! :)
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