Question

Find the area and perimeter of a right angled triangle whose base is 5 cm and height is 12 cm.

Answer 1

Answer:

1/2b×h

1/2×5×12

5×6

30cm answet

Answer 2

Given,

The figure is a right angled triangle.

We know that,

AREA:

Area = $\frac{1}{2} * base * height$

Area = $\frac{1}{2} * 5 * 12$

Area = 30cm²

PERIMETER:

We know that,

Perimeter = side + side + side

In a right angled triangle to find the third side/hypotenuse use Pythagoras theorem.

(Hypotenuse)² = (base)² + (height)²

(Hypotenuse)² = 5² + 12²

(Hypotenuse)² = 25 + 144

Hypotenuse = √169

Hypotenuse = 13cm

Therefore the third side is 13cm

Perimeter = 13 + 5 + 12

= 30cm

Hope it helps

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