7th Class Mathematics Perimeter and Area

  • question_answer 10)
    Find the area of each of the following triangles (a)     (b)      (c)          (d)

    Answer:

                    (a) Area of the triangles \[\text{= }\frac{\text{1}}{\text{2}}\text{  }\!\!\times\!\!\text{  (base  }\!\!\times\!\!\text{  height) = }\frac{\text{1}}{\text{2}}\text{ (4 }\!\!\times\!\!\text{ 3) c}{{\text{m}}^{\text{2}}}\text{= 6c}{{\text{m}}^{\text{2}}}\] (b) Area of the triangle \[\text{=}\frac{\text{1}}{\text{2}}\text{(base  }\!\!\times\!\!\text{  height) = }\frac{\text{1}}{\text{2}}\text{ (5  }\!\!\times\!\!\text{  3}\text{.2) = 8c}{{\text{m}}^{\text{2}}}\] (c)  Area of the triangle \[\text{=}\frac{\text{1}}{\text{2}}\text{(base  }\!\!\times\!\!\text{  height) = }\frac{\text{1}}{\text{2}}\text{ (3}\times \text{4) c}{{\text{m}}^{\text{2}}}\text{= 6c}{{\text{m}}^{\text{2}}}\] (d)  Area of the triangle: \[\text{=}\frac{\text{1}}{\text{2}}\text{(base  }\!\!\times\!\!\text{  height) = }\frac{\text{1}}{\text{2}}\text{ (3}\times 2\text{) c}{{\text{m}}^{\text{2}}}\text{= 3c}{{\text{m}}^{\text{2}}}\]


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