Advertisements
Advertisements
Question
Most of the sailboats have two sails, the jib and the mainsail. Assume that the sails are triangles. Find the total area of sail of the sailboats to the nearest tenth.
Advertisements
Solution
In sailboat,
Area of triangle = `1/2` × Base × Height
In ΔABC, AB = 8.9 m and BC = 3 m.
Area of ΔABC = `1/2 xx BC xx AB`
= `1/2 xx 8.9 xx 3`
= `26.7/2`
= 13.35 m2
In another triangular part,
Area of ΔDEF = `1/2 xx DF xx EG`
= `1/2 xx 25 xx 12.4`
= 155 m2
In another triangular part,
Area of ΔDEH = `1/2 xx DE xx EH`
= `1/2 xx 9.6 xx 16.8`
= 80.64 m2
∴ Area of sailboat = 155 + 80.64 = 235.64 m2
APPEARS IN
RELATED QUESTIONS
A thin metal iron-sheet is rhombus in shape, with each side 10 m. If one of its diagonals is 16 m, find the cost of painting both sides at the rate of ₹ 6 per m2. Also, find the distance between the opposite sides of this rhombus.
Find the missing value.
| Diagonal (d1) | Diagonal (d2) | Area |
| 26 m | 468 sq.m |
The area of a rhombus is 100 sq.cm and length of one of its diagonals is 8 cm. Find the length of the other diagonal
A sweet is in the shape of rhombus whose diagonals are given as 4 cm and 5 cm. The surface of the sweet should be covered by an aluminum foil. Find the cost of aluminum foil used for 400 such sweets at the rate of ₹ 7 per 100 sq.cm
The angle between the diagonals of a rhombus is
The area of the rhombus is 576 sq.cm and the length of one of its diagonal is half of the length of the other diagonal then find the length of the diagonal
A man has to build a rhombus shaped swimming pool. One of the diagonal is 13 m and the other is twice the first one. Then find the area of the swimming pool and also find the cost of cementing the floor at the rate of ₹ 15 per sq.cm
Area of a rhombus = `1/2` product of ______.
The walls and ceiling of a room are to be plastered. The length, breadth and height of the room are 4.5 m, 3 m, and 350 cm respectively. Find the cost of plastering at the rate of Rs 8 per m2.
Most of the sailboats have two sails, the jib and the mainsail. Assume that the sails are triangles. Find the total area sail of the sailboats to the nearest tenth.
