Question

2. The mean mass of 12 men is 168kg. What is the total mass in kg of the 12 men?


3. The area of a rec. is 140 $cm^{2}$ if the width is 7 cm what is the perimeter?



















1. If a number is increased by 30% then what percent is the new number of the old number?

Answer 1

Answer:

Hey mate....

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My mother threw a fit when she saw what a mess we'd made of her kitchen.

Answer 2

Answer:

2

area of rectangle = length × width

140= length × 7

140 / 7 = length

length =20 cm

perimeter of rectangle = 2( length + width)

= 2(20+7)

= 2×27

=54

therefore perimeter of rectangle is 54 cm