The triangular side walls of a flyover have been used for advertisements. The sides of the walls are 122 m, 22 m and 120 m (see Fig.).
The triangular side walls of a flyover have been used for advertisements. The sides of the walls are 122 m, 22 m and 120 m (see Fig.). The advertisements yield an earning of ₹5000 per m^{2} per year. A company hired one of its walls for 3 months. How much rent did it pay?
The sides of the triangle ABC are 122 m, 22 m and 120 m respectively.
Now, the perimeter will be (122+22+120) = 264 m
Also, the semi perimeter (s) = 264/2 = 132 m
Using Heron’s formula,
Area of the triangle = \(\sqrt{s(s  a)(s  b)(s  c)}\)
= \(\sqrt{132(132  122)(132  22)(132  120)m^2}\)
= \(\sqrt{132 \times 10 \times 110 \times 12 m^2}\)
=1320 m^{2}
We know that the rent of advertising per year = ₹ 5000 per m^{2}
∴ The rent of one wall for 3 months
= Rs. (1320 × 5000 × 3)/12
= Rs 1650000

A field is in the shape of a trapezium whose parallel sides are 25 m and 10 m. The nonparallel sides are 14 m and 13 m. Find the area of the field.
15 hours ago

A floral design on a floor is made up of 16 tiles which are triangular, the sides of the triangle being 9 cm, 28 cm and 35 cm (see Fig.).
15 hours ago

A kite in the shape of a square with a diagonal 32 cm and an isosceles triangle of base 8 cm and sides 6 cm each is to be made of three different shades as shown in Fig. How much paper of each shade has been used in it?
1 day ago

An umbrella is made by stitching 10 triangular pieces of cloth of two different colours (see Fig.), each piece measuring 20 cm, 50 cm and 50 cm.
2 days ago

A rhombusshaped field has green grass for 18 cows to graze. If each side of the rhombus is 30 m and its longer diagonal is 48 m, how much area of grass field will each cow be getting?
2 days ago
Latest Post: How does the wire in the filament of a light bulb behave differently to the other wires in the circuit when the current flows? (b) What property of the filament wire accounts for this difference? Our newest member: addier998928764 Recent Posts Unread Posts Tags
Forum Icons: Forum contains no unread posts Forum contains unread posts
Topic Icons: Not Replied Replied Active Hot Sticky Unapproved Solved Private Closed