Question

find the area and perimeter of a rectangle whose length is 7 m and the width is 70 cm. area = 49,000 sq.cm, perimeter = 1,540 cm area = 48,000 sq.cm, perimeter = 1,540 cm area = 59,050 sq.cm, perimeter = 1,440 cm area = 99,000 sq.cm, perimeter = 1,550 cm

Explanation:

Step1: Convert length to cm

Length is 7 m, 1 m = 100 cm, so \( 7\times100 = 700 \) cm.

Step2: Calculate area of rectangle

Area formula: \( A = l\times w \), where \( l = 700 \) cm, \( w = 70 \) cm. So \( A = 700\times70 = 49000 \) sq.cm.

Step3: Calculate perimeter of rectangle

Perimeter formula: \( P = 2\times(l + w) \). Substitute \( l = 700 \), \( w = 70 \): \( P = 2\times(700 + 70)=2\times770 = 1540 \) cm.

Answer:

Area = 49,000 sq.cm, Perimeter = 1,540 cm (the first option)