The base of the traingle is 15dm and its height is 12dm. The height of another triangle of double the area and the base of which is 20 dm is
9 dm
18 dm
8 dm
12.5dm
A square and an equilateral triangle have equal perimeters. If the diagonal of the square is , then the area of the triangle is
None of these
The area of an equilateral triangle is numerically equal to its perimeter . Find the length of its side.
√3 units
2√3 units
3√3 unit
4√3 unit
If one side of an equilateral triangle is 4cm. Then its area =
9√3 cm2
8√3 cm2
4√3 cm2
√3 cm2
A triangle has a height of 6cm and its area is 30cm2, what is the length of its base
10cm
12cm
13cm
15cm
Triangles with the same base and between the same parallels are of
Equal area
Equal perimeter
Both 1 & 2
Area of a triangle if its base, b and height, h are given is
1/2 bh
bh
b2h
1/2 bh2
The area of right angled triangle is 20cm2 and one of the sides containing the right triangle is 4 cm. Then the altitude on the hypotenuse is
8cm
Suppose a triangle with area 28 has a base 7x and a height of 4x. The base and height are respectively
7, 4
4, 7
In a right triangle with sides x and y, hypotenuse z, the altitude drawn on the hypotenuse is a, then
xy = a2
1/x + 1/y = 1/a
x2 + y2 = 2a2