a hand fan is made by stitching 10 equal size triangular sheets of 2 different types of paper the dimensions of equal strips are 25cm 25cm and 14cm find the area of each type of paper needed to make hand fan using herons formula
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Answer:
840cm²
Step-by-step explanation:
the dimensions of equal strips are25cm,25cm and 14cm .
the area of each strip =
√s(s-a)(s-b)(s-c)=
√32(32-25)(32-25)(32-14)=
√32*7*7*18=168
then total the area of each type of paper needed = 168 * 5 = 840 cm²
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