Question

solve any two Mark in brainliest

Answer 1

Answer:

1.4m, 40 cm

Step-by-step explanation:

(2)

Radius = 0.7 m.

Area of sector = 0.49 m^2

(r/2) * l = 0.49

lr = 0.49 * 2

l * (0.7) = 0.98

l = 0.98/0.7

l = 1.4 m.

Hence, Length of arc of circle = 1.4 m.

(3)

Let the square side = a cm.

Diagonal = 10√2

As we know that Diagonal = √2a.

√2a = 10√2

a = 10 cm

Perimeter of a square = 4a

                                    = 4 * 10

                                    = 40 cm.

Hence, perimeter of a square = 40 cm.

Hope it helps you.

#Bebrainly

Answer 2

Answer:

Step-by-step explanation:

Q3

Let length of a square be 'x' cm

Since square has each angle equals to 90°

Applying Pythagoras theorem.

(Diagonal of a square)^2= x^2 + x^2

(10√2)^2=2x^2

200=2x^2

100=x^2

10 cm =x

Perimeter of square=4*x=4*10=40cm

Q2

Since

Area of sector=¢°/360°* πr^2

0.49=¢°/360°*π(0.7)^2

360°/π=¢°

So, length of arc=¢°/360°*2πr

Length of arc=2*0.7=1.4cm

Solution of Q1 is within the attachment.

I hope it helps.

Please rate my answer.