Hari purchased a cloth of breadth 70cm.and length 4meter for his coat. If the breadth of the cloth is double what will be the length of the new piece.
Answers
Answer:
Step-by-step explanation:
Q1: Find the area, in square meters, of a rectangle whose
(i) Length = 5.5 m, breadth = 2.4 m
(ii) Length = 180 cm, breadth = 150 cm
A1: We have,
(i) Length = 5.5 m, Breadth = 2.4 m Therefore, Area of rectangle = Length x Breadth = 5.5 m x 2.4 m = 13.2 m2
(ii) Length = 180 cm = 1.8 m, Breadth = 150 cm = 1.5 m [ Since 100 cm = 1 m] Therefore, Area of rectangle = Length x Breadth = 1.8 m x 1.5 m = 2.7 m2
Q2: Find the area, in square centimeters, of a square whose side is
(i) 2.6 cm
(ii) 1.2 dm
A2: We have,
(i) Side of the square = 2.6 cm
Therefore, area of the square = (Side)2 = (2.6 cm)2= 6.76 cm2
(ii) Side of the square = 1.2 dm = 1.2 x 10 cm = 12 cm
Therefore, area of the square = (Side)2 = (12 cm)2= 144 cm2 [ Since 1 dm = 10 cm]
Q3: Find in square metres, the area of a square of side 16.5 dam.
A3: We have,
Side of the square = 16.5
dam = 16.5 x 10 m = 165 m
Area of the square = (Side)2 = (165 m)2 = 27225 m2
[Since 1 dam/dm (decameter) = 10 m ]
Q4: Find the area of a rectangular field in acres whose sides are:
(1) 200 m and 125 m
(ii) 75 m 5 dm and 120 m
A4 : We have,
(i) Length of the rectangular field = 200 m
Breadth of the rectangular field = 125 m
Therefore, Area of the rectangular field = Length x Breadth = 200 m x 125 m
= 25000 m2 = 250 acres [Since 100 m2 = 1 are]
(ii) Length of the rectangular field =75 m 5 dm = (75 + 0.5) m
= 75.5 m [Since 1 dm = 10 cm = OA m]
Breadth of the rectangular field = 120 m
Therefore, Area of the rectangular field = Length x Breadth
= 75.5 m x 120 m = 9060 m2 = 90.6 acres [Since 100 m2 = 1 ar