Advertisements
Advertisements
Question
The area of an equilateral triangle is 36`sqrt3` sq. cm. Find its perimeter.
Solution
Area of an equilateral triangle is given by
`sqrt3/4 xx ("side" )^2` = A
`sqrt3/4 xx ("side" )^2 = 36sqrt3`
(side)2 = 144
side = 12 cm
Hence
perimeter = 3 x ( its side )
= 3 x 12
= 36 cm
APPEARS IN
RELATED QUESTIONS
Find the area of an isosceles triangle with perimeter is 36 cm and the base is 16 cm.
Find the area and the perimeter of quadrilateral ABCD, given below; if AB = 8 cm, AD = 10 cm, BD = 12 cm, DC = 13 cm and ∠DBC = 90°.
The perimeter of a triangle is 450 m and its side are in the ratio 12: 5: 13. Find the area of the triangle.
The base and the height of a triangle are in the ratio 4: 5. If the area of the triangle is 40 m2; find its base and height.
The lengths of the sides of a triangle are in the ratio 4: 5 : 3 and its perimeter is 96 cm. Find its area.
One of the equal sides of an isosceles triangle is 13 cm and its perimeter is 50 cm. Find the area of the triangle.
Find the area of a triangle whose sides are in the ratio 5:12:13 and whose perimeter is 36cm.
Find the perimeter of A scalene triangle with sides 7 m, 8 m, 10 m
The scalene triangle has 40 cm as its perimeter and whose two sides are 13 cm and 15 cm, find the third side
In the given figures, perimeter of ΔABC = perimeter of ΔPQR. Find the area of ΔABC.
