A ladder has rungs 25 cm apart (see fig.) The rungs decrease uniformly in length from 45 cm at the bottom to 25 cm at the top.If the top and bottom rungs are `2 1/2` m apart, what is the length of the wood required for the rungs ?
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Given a circle with centre O and radius 2.5 cm, what is the length of the longest chord of the circle?

A table-top measures 2 m 25 cm by 1 m 50 cm.What is the perimeter of the to of the table?

The length of a rectangle is 7.1 cm and its breadth is 2.5 cm. What is the area of the rectangle?

A ladder is placed against a wall such that its foot is at a distance of 2.5 m from the wall and its top reaches a window 6 m above the ground. Find the length of the ladder.

A telescope has an objective lens of focal length 200 cm and an eye piece with focal length 2 cm.If this teleescope is used to see a 50 metre tall building at a distance of 2 km,what is the height of the image of the building formed by the objective lens?

A small telescope has an objective lens of focal length 140 cm and an eyepiece of focal length 5.0 cm. (A) If this telescope is used to view a 100 m tall tower 3 km away, what is the height of the image of the tower formed by the objective lens? (B) What is the height of the final image of the tower if it is formed at 25 cm?

In Fig., you see the frame of a lampshade. It is to be covered with a decorative cloth. The frame has a base diameter of 20 cm and height of 30 cm. A margin of 2.5 cm is to be given for folding it over the top and bottom of the frame. Find how much cloth is required for covering the lampshade. Assume pi = 22/7

The area of a rectangular sheet is 500 cm^2 . If the length of the sheet is 25 cm, what is its width? Also find the perimeter of the rectangular sheet