the perimeter of an Isosceles triangle is 42 cm and it's base is 1 1/2 times each of the equal sides. find the length of each of the triangle. (given √7=2.64.)can any moderator help me...
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Step-by-step explanation:
(i)
the length of each side of the triangle
1
2
1
x+x+x=42
2
3
x+x+x=42
2
7
x=42
x=12cm
side=12cm
(iii)
the height of the triangle
base
2
+height
2
=hypotenuse
2
⇒height
2
=12
2
−9
2
=63
∴height=
63
=3
7
cm
(ii)
Area of the triangle
Area=
2
1
base×height
=
2
1
×18×3
7
=71.28sq units
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