Advertisements
Advertisements
प्रश्न
Two sides of a triangle are 6.4 m and 4.8 m. If the height of the triangle corresponding to 4.8 m side is 6 m;
find :
(i) area of the triangle ;
(ii) height of the triangle corresponding to 6.4 m sides.
Advertisements
उत्तर
ABC is the Δ in which BC = 4.8 m
AC = 6.4m and AD = 6 m
∴ area of ΔABC = `1/2 "BC" xx "AD"`
= `1/2 xx 4.8 xx 6`
= 14.4 m2
BE is height of Δ corresponding to 6.4 m
∴ `1/2 "AC" xx "BE" = 14.4`
`1/2 xx 6.4 xx "BE" = 14.4`
BE = `(14.4 xx 2)/6.4`
BE = `14.4/3.2`
= `9/2` = 4.5 m
Hence (i) 14.4 m2 (ii) 4.5 m
APPEARS IN
संबंधित प्रश्न
If the difference between the sides of a right-angled triangle is 3 cm and its area is 54 cm2; find its perimeter.
The given figure shows a right-angled triangle ABC and an equilateral triangle BCD. Find the area of the shaded portion.
Find the area of a triangle, whose sides are :
18 mm, 24 mm and 30 mm
The area of an equilateral triangle is `144sqrt3` cm2; find its perimeter.
The area of an equilateral triangle is numerically equal to its perimeter. Find its perimeter correct to 2 decimal places.
The base of a triangle field and its height are in the ratio 2:5. If the cost of cultivating the field at Rs.42 per sq. m is Rs.7560, find its base and height.
Find the area of a triangle with a base 12cm and a height equal to the width of a rectangle having area of 96cm2 and a length of 12cm.
Find the area of a triangle with a base 12cm and a height equal to the width of a rectangle having area of 96cm2 and a length of 12cm.
A piece of wire is 36 cm long. What will be the length of each side if we form an equilateral triangle
In the following figure, all triangles are equilateral and AB = 8 units. Other triangles have been formed by taking the mid points of the sides. What is the perimeter of the figure?
