1.95cm
2.90cm
3.120cm
4.82.26cm
5.
Solution:
1.10 x 7 = 70
10 x 5 = 50 ÷ 2 = 25 cm
i divided the 50 because it is a triangle
so 70 + 25 = 95
2.14 x 5 = 70
5 + 5 + 5 + 5 = 20
so 70 + 20 = 90 cm
3.10 x 8 = 80 cm
10 x 8 = 80 ÷ 2 = 40
because it a triangle agian
so 80 + 40 = 120 cm
4. 8 + 8 + 8 + 8 = 32
π x (8cm)² = 100.53 ÷ 2 = 50.26
i divided it because the circle is half
so 32 + 50.26 = 82.26 cm
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Answers & Comments
1.95cm
2.90cm
3.120cm
4.82.26cm
5.
Solution:
1.10 x 7 = 70
10 x 5 = 50 ÷ 2 = 25 cm
i divided the 50 because it is a triangle
so 70 + 25 = 95
2.14 x 5 = 70
5 + 5 + 5 + 5 = 20
so 70 + 20 = 90 cm
3.10 x 8 = 80 cm
10 x 8 = 80 ÷ 2 = 40
because it a triangle agian
so 80 + 40 = 120 cm
4. 8 + 8 + 8 + 8 = 32
π x (8cm)² = 100.53 ÷ 2 = 50.26
i divided it because the circle is half
so 32 + 50.26 = 82.26 cm