Question

एक समकोण त्रिभुज का कर्ण 5 सेंटीमीटर है इसका क्षेत्रफल कितना होगा​

Answer 1

Answer:

area of shamkone tribhuj=√3/4a^2

=√3/4×5^2

= √3/4×25

=25√3/4cm^2

Answer 2

Answer:

if a = b

and c= 5cm

by Pythagoras theorem..

${c}^{2} = {a}^{2} + {b}^{2}$

. ' . a=b

${c}^{2} = {a}^{2} + {a}^{2}$

${c}^{2} = 2 {a}^{2}$

${5}^{2} = 2 {a}^{2}$

a = 5 /√2 ....(1)

area of right triangle..

= 1/2 ×a×b

= 1/2 a×b (a=b)

= 1/2 a²

= 1/2 ( 5/√2)² ....from (1)

= 1/2 × 25/2

= 25/4

= 6.25 cm²