Area of a right circular triangle is 54 cm2. If one of its legs is 12 cm long, its perimeter is
A)18cm B) 27 cm C) 36cm D) 54 cm
step by step explaination
Answers
Answered by
0
We know
Area =
2
1
×length×height
=
2
1
×ab
P(perimeter)=a+b+
a
2
+b
2
P=a+
a
2
+4(A/a)
2
+2
a
A
=12+
(12)
2
+4(
12
54
)
2
+2
.
12
54
=36cm
Answered by
1
Answer:
The area of the right angled triangle is 54 cm. If one of its legs is 12 cm long ,find its perimeter
Thus, c=15.
Now perimeter :-
P =a+b+c
=12+9+15
=36cm.
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