Question

8. Find the area of the square that can be inscribed in a circle of radius 8 cm.
9. The diameter of a circular park is 24 m. A 3 m wide path
runs around it from inside. Find the cost of paving the
path at 25 per square meter.
S.​

Answer 1

Answer:

8.radius =8cm diameter = 2*8=16cm . Then let side of square be X so a/q Xsq + Xsq =16 sq so Xsq =128 cm sq.

9.Let the diameter of the

circular park ( D ) = 24 m

Radius of the park ( R ) = D/2

R = 24 /2 = 12 m

If the width of the path inside the

park ( w ) = 3m

Radius of the inside circle (r ) = R - w

r = 12 - 3 = 9 m

Area of the path ( A ) = πR² - πr²

A = π(R + r ) (R - r )

= π ( R + r ) w

= ( 22 /7 ) ( 12 + 9 ) ( 3 )

= 22 × 3 × 3

A = 198m²

Cost of the paving the per square

meter = Rs 25

Cost of paving total area of the path

=25 × 198

= Rs4950

I hope this helps you.

Answer 2

Answer:

8. 256cm^2

9. sorry, but i dont know