Subtract 62.75 from the sum of 48.92 and 76.58. Also round off the answer to the nearest tenth.

Amit is designing a logo using geometric shapes. He draws:

(a) A closed curve with 4 straight sides

(b) A straight line that extends infinitely in both directions

(c) A shape that has a centre and all points on the boundary are at the same distance from it.

Answer the following questions:

(a) What is the name of the closed curve with 4 sides?

(b) What is the name of the second shape Amit drew?

(c) What is the third shape? What is the name of the line segment joining the centre to any point on the boundary?

Using only ruler and compass, construct an angle of 90°. Then construct an angle of 45° by bisecting it.

Study the following floor plan of a house prepared by an architect.

Some of the measurements are given.

(i) Find the missing measurements.

(ii) Find out the total area of the house (including the Garden).