Jammu and Kashmir Board Solutions for Chapter: Mensuration, Exercise 2: EXERCISE 10.1

Find the perimeter of the following figure

Find the perimeter of a triangle of sides $3 \mathrm{c}\mathrm{m},4 \mathrm{c}\mathrm{m}$ and $5 \mathrm{c}\mathrm{m}.$

Find the perimeter of a triangle with sides measuring $10 \mathrm{c}\mathrm{m},14 \mathrm{c}\mathrm{m}$ and $15 \mathrm{c}\mathrm{m}$.

Two sides of a triangle are $12 \mathrm{c}\mathrm{m}$ and $14 \mathrm{c}\mathrm{m}$. The perimeter of the triangle is $36 \mathrm{c}\mathrm{m}.$ Find its third side.

What is the perimeter of each of the following figures? What do you infer from the answers?
 (a) (b)    (c)                     

(d)

Avneet buys $9$ square paving slabs, each with a side of $\frac{1}{2} \mathrm{m}$. He lays them in the form of a square.

What is the perimeter of his arrangement ?

Avneet buys $9$ square paving slabs, each with a side of $\frac{1}{2} \mathrm{m}$. He lays them in the form of a square.

Shari does not like his arrangement. She gets him to lay them out like a cross. If the perimeter of her arrangement is $k$ metre then find value of $k$.
 

Avneet buys $9$ square paving slabs, each with a side of $\frac{1}{2} \mathrm{m}$. He lays them in the form of a square.

 Which has a greater perimeter?