**A rectangular room is 6 m long, 4.8 m wide and 3.5 m high. Find the inner surface area of the four walls.**

**Solution:**

**A rectangular plot of land measures 41 metres in length and 22.5 metres in width. A boundary wall 2 metres high is built all around the plot at a distance of 1.5 m from the plot. Find the inner surface area of the boundary wall.**

**Solution:**

**More Solutions:**

- AD is a diameter of a circle and AB.
- If AB = 12 cm, BC = 16 cm and AB.
- O is the centre of the circle.
- Find the lengths of :
- If QR = 12 cm, calculate PQ.
- Find its distance from the centre of the circle.
- Calculate the distance CD.
- Prove that NOMP is a square.
- Prove that AD bisects ∠BAC and ∠BDC.
- Find the area of a triangle.