Question

answer it class 10 ex 12.2 q10​

Answer 1

Answer:

Area between 2 consecutive ribs= 795.53 sq. cm

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Answer 2

Answer:

Since, ribs are equally placed. Therefore,

Angle made by two consecutive ribs at the centre = 360°/8 = 45°.

Thus,

Area between two consecutive ribs

= Area of a sector of a circle of radius 45 cm and sector angle 45°

= 45/360 × 22/7 × 45 × 45

= 1/8 × 22/7 × 45 × 45 = 795.53cm².