1. A rectangle has a length of 5cm and a height of 4cm.
2 answers:
Answer:
a
20cm squared
b
18cm
c
5cm
d
80cm
Step-by-step explanation:
a
Area is height multiplied by length in a regular quadrilateral
b
Perimeter is calculated by adding all the sides together
c
0.5 is effectively halving, so instead of 4 multiplied by 5 it is 2 multiplied by 2.5
d
2 is effectively doubling, so instead of 4 multiplied by 5 it is 8 multiplied by 10
Answer:
<u>20 cm² </u> <u>18 cm </u> <u>5 cm² </u> <u>80 cm² </u> Step-by-step explanation:
<u>Q1(a)</u>
Area = length x height Area = 5 x 4 Area = <u>20 cm² </u>
<u>Q1(b)</u>
Perimeter = 2(length + height) Perimeter = 2(5 + 4) = 2(9) Perimeter = <u>18 cm </u>
<u>Q1(c)</u>
New dimensions are : 5/2 = <u>2.5</u> and 4/2 = <u>2</u> New Area = 2.5 x 2 New Area = <u>5 cm² </u>
<u>Q1(d)</u>
New dimensions are : 2 x 5 = <u>10</u> and 2 x 4 = <u>8</u> New Area = 10 x 8 New Area = <u>80 cm² </u>
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