Question

Find the area of triangle in which:
( i ) a = b = c = 4 cm
( ii ) In right angled triangle, hypotenuse is 13 cm and one side is 5 cm.

Answer 1

Answer:

(prependicular)^2 = (hypotenous)^2 - (base)^2

(p)^2 = (13)^2 - (5)^2

p^2 = 169-25

p^2 = 144

p = 12cm

area of right angle traingle = 1/2 × base × height

= 1/2 × 5 × 12

= 30cm^2

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Answer 2

Answer:

i) a= b= c = 4cm

it means that it is an equilateral triangle.

area of equilateral triangle= √3/4 × side^2

=√3/4× 4^2

=√3/4× 16

= 4√3