Question

I need a proper explanation and steps


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Answer 1

Step-by-step explanation:

put the things given in the formula....... and u will get the ans .....

see the attached pic

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Answer 2

Answer:

(i) Ans:- 450 cm²

(ii) Ans:- 6 cm

Step-by-step explanation:

(i) Ans:- Base = 20 cm

             Height = 45 cm

             Area = 1/2 × base × height = 1/2 × 45 × 20

                                                          = 900/2

                                                          = 450 cm²

                                                          Area = 450 cm²

(ii) Ans:- Base = 10 cm

              Height = x

             Area = 1/2 × base × height = 30 cm²

                      = 1/2 × 10 × x = 30 cm²

                      = 10/2 × x = 30 cm²

                      = 5 × x = 30 cm²

                      = x = 30/5

                      = x = 6

                      Height = 6 cm

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