Advertisements
Advertisements
प्रश्न
The diagonal of a rectangle is 34 cm. If its breadth is 16 cm; find its :
(i) length
(ii) area
Advertisements
उत्तर
AC2 = AB2+BC2 (By Pythagoras theorem)
(34)2 = l2 + (16)2
1156 = l2 + 256
l2 = 1156 – 256
l2 = 900
l = `sqrt(900)` = 30 cm
area = l x b = 30 x 16 = 480 cm2
(i) 30 cm (ii) 480 cm2
APPEARS IN
संबंधित प्रश्न
The perimeter of a rectangle is 46 m and its length is 15 m. Find its :
(i) breadth
(ii) area
(iii) diagonal.
The length of a rectangle is 16 cm and its perimeter is equal to the perimeter of a square with side 12.5 cm. Find the area of the rectangle.
The length and the breadth of a rectangular field are in the ratio 5: 4 and its area is 3380 m2. Find the cost of fencing it at the rate of ₹75 per m.
A path of uniform width, 2.5 m, runs around the inside of a rectangular field 30 m by 27 m. Find the area of the path.
Mohit makes 8 full rounds of a rectangular field with length = 120 m and breadth = 75 m.
John makes 10 full rounds of a square field with each side 100 in. Find who covers larger distance and by how much?
An athlete takes 10 rounds of a rectangular park, 50 m long and 25 m wide. Find the total distance covered by him.
If the length of a rectangle is 20 m and its width is 12 m, what is its perimeter?
If the length of a rectangle is 14 m and its breadth is 10 m, what is its perimeter?
Each rectangle is made out of 12 equal squares, so all have the same area, but the length of the boundary will be different.
Which of these rectangles has the longest perimeter?
The area of a rectangular field is 1600 sq m. If the length of the field is 80 m, find the perimeter of the field.
