1.

Nilabh has to cut out circles of diameter 5/4 cm from an aluminium strip of dimensions 35/4 cm by 5/4cm . how many circles will nilabh cut? Also find the wastage of the aluminium strip. ​

Answer»

ilabh had to cut out circle of 5/4 cm am aluminum STRIP dimensions 35/4 cm by 5/4 cm how many full will nilabh cul ?also find the wastage of the aluminum stripAssume diameter of the required circle = 5/4 cmAluminium strip dimension = 35/4 X 5/4 cmSo NUMBER of circles which can be cut = 35/4 / 5/4 = 7So maximum number of circles will be 7Now area of RECTANGLE = 35/4 x 5/4 SQ cm                                   = 175/16 sq cmWe know that Area of one circle = π r^2                                                       = π (d/2)^2                                                       = π d^2 / 4                                                        = π/4 (5/4)^2                                                         = 25 π/64 So area of 7 circles will be 7 x 25 π/64                                                      = 25 x 11 / 32                                                   = 275 /32 sq cm = 8.593Now coming to wastage                                                 Wastage = 175/16 - 275/32                                                                = 75/32                                                                = 2.34 sq cmMark me as BRAINLIEST



Discussion

No Comment Found