Math questions help?

Posted on 2015-09-14 06:51:00 in Math by FLEMING

1. the perimeter of a aquare side length of 8.2cm is:

a. 67.24 cm
b. 16.4 cm
c. 32.8 cm
d. 41cm
e. 24.6 cm

2. A parrallelogram of area 24cm ² and height 6cm has a base length of
a. 2cm
b. 4cm
c. 8cm
d.6cm
e.18cm

3. Tsa (total surface area) of rectangular prism with dimensions 18cm by 12cm by 22cm in square cm =

a. 960
b. 876
c.4752
d.1320
e.1752

4. What is the tsa (total surface area) of cylinder 5m long and 4m in diameter?

5. Tsa (total surface area) of cylinder height 16cm and radius 8cm in square cm is close to
a. 768
b. 1536
c. 1206
d. 2413
e. 804

6. volume of cylinder of height 16m and diameter 18m in cubic cm =
a. 3216.99
b. 4071.50
c. 5184.00
d. 4608.00
e. 8143.01

7. circle of diameter 26cm fits inside a square touching every side - area in square not taken up by circle is
a. 1447.72cm ²
b. 290.14cm ² ²
c. 594.32cm ²
d. 145.07cm ²
e.63.16cm ²

8. find tsa ( total surface area) of sphere with radius of 50cm

please show working out

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