Question

please solve these,I will mark him brainleast, follow,points​

Answer 1

Answer:

1. ஃ Romit covers distance = 1.6 km

2. ஃ 2,400 tiles needed to cover the rectangular path.

Step-by-step explanation:

1. Perimeter = 2 ( L + B )

= 2 ( 50 m + 30 m )

= 2 ( 80 m ) = 160 m

Romit's distance = 160 m × 10 = 1,600 m

1,000 m = 1 km

$\sf 1,600 \: m = \frac{1600}{1000} = 1.6 \: km$

2. Area of a square tile = S × S

= 5 cm × 5 cm = 25 cm²

Area of a rectangular path = L × B

= 30 m × 20 m = 600 m²

100 cm = 1 m

$\sf {25 \: cm}^{2} = \frac{25}{100} = {0.25 \: m}^{2}$

So, that means area of 4 tiles = 1 m

600 m² = 600 × 4 = 2,400 tiles

In this answer, we learnt:

• Perimeter of a rectangle =

2 ( L × B )

• i) 1,000 m = 1 km

ii) 100 cm = 1 m

• Area of rectangle = L × B

• Area of square = S × S