Question

can u solve NE the 7 question by the help of steps ​

Answer 1

Step-by-step explanation:

$d = 3.5 \: m \\ \\ r = \frac{3.5}{2} \: m \\ \\ inner \: csa = 2\pi \times r \\ \\ = 2 \times \frac{3.5}{2} \times \frac{22}{7} \\ \\ = 0.5 \times 22 \\ \\ = 11 \: sq. \: m \\ \\ cost = 11 \times 40 \\ \\ = rupees \: 440 .$

Answer:

I) 11 square metres

ii). RUPEES 440