Advertisements
Advertisements
प्रश्न
The semi-perimeter of a triangle having sides 15 cm, 20 cm and 25 cm is
विकल्प
60 cm
45 cm
30 cm
15 cm
Advertisements
उत्तर
30 cm
Explanation;
Hint:
l = 15 cm, b = 20 cm, h = 25 cm
Semi-perimeter = `("a" + "b" + "c")/2`
= `(15 + 20 + 25)/2`
= 30 cm
APPEARS IN
संबंधित प्रश्न
The lengths of the sides of a triangle are in the ratio 3 : 4 : 5 and its perimeter is 144 cm. Find the area of the triangle and the height corresponding to the longest side.
A triangle and a parallelogram have the same base and the same area. If the sides of the triangle are 13 cm, 14 cm and 15 cm and the parallelogram stands on the base 14 cm, find the height of the parallelogram.
Find the area of a triangle whose sides are 3 cm, 4 cm and 5 cm respectively.
Find the area of the triangle formed by the points
(–10, –4), (–8, –1) and (–3, –5)
A triangular shaped glass with vertices at A(– 5, – 4), B(1, 6) and C(7, – 4) has to be painted. If one bucket of paint covers 6 square feet, how many buckets of paint will be required to paint the whole glass, if only one coat of paint is applied
Using Heron’s formula, find the area of a triangle whose sides are 1.8 m, 8 m, 8.2 m
The perimeter of an equilateral triangle is 30 cm. The area is
The cost of levelling the ground in the form of a triangle having the sides 51 m, 37 m and 20 m at the rate of Rs 3 per m2 is Rs 918.
The triangular side walls of a flyover have been used for advertisements. The sides of the walls are 13 m, 14 m and 15 m. The advertisements yield an earning of Rs 2000 per m2 a year. A company hired one of its walls for 6 months. How much rent did it pay?
How much paper of each shade is needed to make a kite given in the following figure, in which ABCD is a square with diagonal 44 cm.
