the fig 15.70 shows the cross-section of a tunnel. it is in the shape of a major segment of a circle of radius 1.5cm on a chord of length 2.6m. calculate (a) the angle subtended at the centre of the circle by the major arc correct to the nearest 0.1°. (b) the area of the cross section of the tunnel correct to 2d.p.?
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Asked by Anabel on 5th March, 2023
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