Question

2. The perimeter of an isosceles triangle is 56 cm. If the unequal side is 16 cm long, find the length
of the equal sides.
5
3. The length of a rectangle is th of its breadth. If its perimeter is 81 m, find its area.
4
4. A figure is formed by putting two squares of side 8 cm side by side. Find the perimeter and area of
the figure thus obtained.
5. A rectangular park is 90 m long and 35 m wide. A lady walks around the park travelling 5 km. How
many times did she go around the park?
6. The perimeter of a rectangular field is 320 m. If the length and breadth are in the ratio 5:3, find the
length and breadth of the field.
7. Rajat is running around a rectangular field with dimensions 750 m x 500 m while Sumit is running
around a square field with side 625 m. If Rajat takes 20 min to go round the field and Sumit takes
15 min, find who is running faster.
8. Find the cost of levelling a rectangular field of dimensions 6.75 m x 5 m @ 45
.
per m​

Answer 1

2.

$perimrter \: of \: triangle \: \: a \: + b \ + c \\ here \: a \: b \: and \: c \: are \: sides \: of \: triangle \\ = > x + x + 16 = 56 \\ = > 2x = 40 \\ x = > 20$