Find the perimeter of a rectangle whose area is 650 sq.cm and its breadth is 13cm.
The side of a square is 70cm. Find its area and perimeter,
Answers
Step-by-step explanation:
area of rectangle = 650 sq.cm
L × b = 650 sq.cm
L × 13 = 650 sq.cm
L = 650 / 13
L = 50 cm
perimeter of rectangle = 2 ( L + B )
= 2 ( 50 + 13 )
= 2 ( 63 )
= 126 cm
Answer:
Perimeter of a rectangle whose are is 650 sq.cm and it's breadth is 13cm.
(Answer) - 125cm
Q.2. The side of a square is 70cm. Find its area and perimeter.
(Answer) - Area = 4,900 sq.cm
Perimeter = 280 cm
Step by step explanation:
Q.1. Area=650 sq.cm
breadth=13 cm
:. length of the rectangle= area/breadth
= (650/13) cm
= 50 cm
Now, Perimeter of the rectangle = 2(length+breadth) unit
=2( 50+ 13) cm
=2(63) cm
=(2×63) cm
= 126 cm
Q.2.i. Side = 70cm
Area of a square = (side×side) sq.unit
= (70×70) sq.cm
= 4,900 sq.cm
ii. Side= 70cm
Perimeter of a square = (4×side) unit
= (4×70) cm
= 280cm
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