a rectangular field has dimensions 25 m by 15 two mutually..., Area, General Mathematics

Question:A rectangular field has dimensions 25 m by 15 m. Two mutually perpendicular passages, 2 m wide have been left in the central part. In rest of the fields, grass has bee grown. The area under the grass is :

A `295 m^2` 
B `299 m^2` 
C `300 m^2` 
D `375 m^2`

/98

+ AnswerB

+ ExplanationArea of cross roads` = (25 xx 2 + 15 xx 2 - 2 xx 2) m^2`

                                `= 76 m^2`

Area of the field` = (25 xx 15) m^2`

                          `= 375 m^2`

Area under grass` = (375 - 76) m^2`

                          `= 299 m^2`

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