Question

1. Find the missing dimensions for the following.
(a) Rectangle, 1 = 4 cm, Area 12 cm, b = ?
(b) Rectangle, 1 = 9 cm, b = 4 cm, Area = ?
(c) Square, s = 5 cm, Area = ?
(d) Square, s = 13 cm, Area = ?​

Answer 1

Answer:

(a) breadth of rectangle = 3 cm

(b) Area of rectangle = 36 cm²

(c) Area of square = 25 cm²

(d) Area of square = 169 cm²

Step-by-step explanation:

(a) Area = 12 cm, length = 4 cm

$breadth \: of \: rectagle= area \div length$

==> 12/4 = 3 cm

(b) length = 9 cm, breadth = 4 cm

$area \: of \: rectangle = length \times breadth$

==> 9 × 4 = 36 cm²

(c) side = 5 cm

$area \: of \: square = side \times side$

==> 5 × 5 = 25 cm²

(d) side = 13 cm

$area \: of \: square = side \: \times \: side$

==> 13 × 13 = 169 cm²